annotate xml/dnsbl.in @ 300:3a3b0cbcaf6e

update tld.conf for new zones
author Carl Byington <carl@five-ten-sg.com>
date Mon, 13 Oct 2014 13:55:21 -0700
parents 896b9393d3f0
children 1f40b1b0ad31
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
1 <reference>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
2 <title>@PACKAGE@ Sendmail milter - Version @VERSION@</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
3 <partintro>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
4 <title>Packages</title>
201
752d4315675c add reference to mercurial repository in the documentation
Carl Byington <carl@five-ten-sg.com>
parents: 187
diff changeset
5
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
6 <para>The various source and binary packages are available at <ulink
201
752d4315675c add reference to mercurial repository in the documentation
Carl Byington <carl@five-ten-sg.com>
parents: 187
diff changeset
7 url="http://www.five-ten-sg.com/@PACKAGE@/packages/">http://www.five-ten-sg.com/@PACKAGE@/packages/</ulink>.
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
8 The most recent documentation is available at <ulink
201
752d4315675c add reference to mercurial repository in the documentation
Carl Byington <carl@five-ten-sg.com>
parents: 187
diff changeset
9 url="http://www.five-ten-sg.com/@PACKAGE@/">http://www.five-ten-sg.com/@PACKAGE@/</ulink>.
752d4315675c add reference to mercurial repository in the documentation
Carl Byington <carl@five-ten-sg.com>
parents: 187
diff changeset
10 </para>
752d4315675c add reference to mercurial repository in the documentation
Carl Byington <carl@five-ten-sg.com>
parents: 187
diff changeset
11
752d4315675c add reference to mercurial repository in the documentation
Carl Byington <carl@five-ten-sg.com>
parents: 187
diff changeset
12 <para>A <ulink
752d4315675c add reference to mercurial repository in the documentation
Carl Byington <carl@five-ten-sg.com>
parents: 187
diff changeset
13 url="http://www.selenic.com/mercurial/wiki/">Mercurial</ulink> source
752d4315675c add reference to mercurial repository in the documentation
Carl Byington <carl@five-ten-sg.com>
parents: 187
diff changeset
14 code repository for this project is available at <ulink
752d4315675c add reference to mercurial repository in the documentation
Carl Byington <carl@five-ten-sg.com>
parents: 187
diff changeset
15 url="http://hg.five-ten-sg.com/@PACKAGE@/">http://hg.five-ten-sg.com/@PACKAGE@/</ulink>.
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
16 </para>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
17
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
18 </partintro>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
19
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
20 <refentry id="@PACKAGE@.1">
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
21 <refentryinfo>
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
22 <date>2013-05-22</date>
261
92a98e661a0b update documentation for newer xml dtd
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
23 <author>
92a98e661a0b update documentation for newer xml dtd
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
24 <firstname>Carl</firstname>
92a98e661a0b update documentation for newer xml dtd
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
25 <surname>Byington</surname>
92a98e661a0b update documentation for newer xml dtd
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
26 <affiliation><orgname>510 Software Group</orgname></affiliation>
92a98e661a0b update documentation for newer xml dtd
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
27 </author>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
28 </refentryinfo>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
29
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
30 <refmeta>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
31 <refentrytitle>@PACKAGE@</refentrytitle>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
32 <manvolnum>1</manvolnum>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
33 <refmiscinfo>@PACKAGE@ @VERSION@</refmiscinfo>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
34 </refmeta>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
35
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
36 <refnamediv id='name.1'>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
37 <refname>@PACKAGE@</refname>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
38 <refpurpose>a sendmail milter with per-user dnsbl filtering</refpurpose>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
39 </refnamediv>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
40
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
41 <refsynopsisdiv id='synopsis.1'>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
42 <title>Synopsis</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
43 <cmdsynopsis>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
44 <command>@PACKAGE@</command>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
45 <arg><option>-c</option></arg>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
46 <arg><option>-s</option></arg>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
47 <arg><option>-d <replaceable class="parameter">n</replaceable></option></arg>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
48 <arg><option>-e <replaceable class="parameter">from|to</replaceable></option></arg>
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
49 <arg><option>-b <replaceable class="parameter">local-domain-socket</replaceable></option></arg>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
50 <arg><option>-r <replaceable class="parameter">local-domain-socket</replaceable></option></arg>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
51 <arg><option>-p <replaceable class="parameter">sendmail-socket</replaceable></option></arg>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
52 <arg><option>-t <replaceable class="parameter">timeout</replaceable></option></arg>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
53 </cmdsynopsis>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
54 </refsynopsisdiv>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
55
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
56 <refsect1 id='options.1'>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
57 <title>Options</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
58 <variablelist>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
59 <varlistentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
60 <term>-c</term>
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
61 <listitem><para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
62 Load the configuration file, print a cannonical form
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
63 of the configuration on stdout, and exit.
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
64 </para></listitem>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
65 </varlistentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
66 <varlistentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
67 <term>-s</term>
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
68 <listitem><para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
69 Stress test the configuration loading code by repeating
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
70 the load/free cycle in an infinite loop.
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
71 </para></listitem>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
72 </varlistentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
73 <varlistentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
74 <term>-d <replaceable class="parameter">n</replaceable></term>
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
75 <listitem><para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
76 Set the debug level to <replaceable class="parameter">n</replaceable>.
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
77 </para></listitem>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
78 </varlistentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
79 <varlistentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
80 <term>-e <replaceable class="parameter">from|to</replaceable></term>
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
81 <listitem><para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
82 Print the results of looking up the from and to addresses in the
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
83 current configuration. The | character is used to separate the from and to
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
84 addresses in the argument to the -e switch.
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
85 </para></listitem>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
86 </varlistentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
87 <varlistentry>
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
88 <term>-b <replaceable class="parameter">local-domain-socket-file-name</replaceable></term>
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
89 <listitem><para>
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
90 Set the local socket used for the connection to the dccifd daemon.
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
91 This is typically /var/dcc/dccifd.
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
92 </para></listitem>
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
93 </varlistentry>
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
94 <varlistentry>
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
95 <term>-r <replaceable class="parameter">local-domain-socket-file-name</replaceable></term>
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
96 <listitem><para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
97 Set the local socket used for the connection to our own dns resolver processes.
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
98 </para></listitem>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
99 </varlistentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
100 <varlistentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
101 <term>-p <replaceable class="parameter">sendmail-socket</replaceable></term>
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
102 <listitem><para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
103 Set the socket used for the milter connection to sendmail. This is either
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
104 "inet:port@ip-address" or "local:local-domain-socket-file-name".
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
105 </para></listitem>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
106 </varlistentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
107 <varlistentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
108 <term>-t <replaceable class="parameter">timeout</replaceable></term>
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
109 <listitem><para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
110 Set the timeout in seconds used for communication with sendmail.
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
111 </para></listitem>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
112 </varlistentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
113 </variablelist>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
114 </refsect1>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
115
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
116 <refsect1 id='usage.1'>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
117 <title>Usage</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
118 <para><command>@PACKAGE@</command> -c</para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
119 <para><command>@PACKAGE@</command> -s</para>
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
120 <para><command>@PACKAGE@</command> -e 'someone@aol.com|localname@mydomain.tld'</para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
121 <para><command>@PACKAGE@</command> -d 10 -r resolver.sock -p local:dnsbl.sock</para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
122 </refsect1>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
123
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
124 <refsect1 id='installation.1'>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
125 <title>Installation</title>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
126 <para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
127 This is now a standard GNU autoconf/automake installation, so the normal
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
128 "./configure; make; su; make install" works. "make chkconfig" will
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
129 setup the init.d runlevel scripts. Alternatively, you can use the
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
130 source or binary RPMs at <ulink
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
131 url="http://www.five-ten-sg.com/@PACKAGE@/packages">http://www.five-ten-sg.com/@PACKAGE@/packages</ulink>.
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
132 </para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
133 <para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
134 Note that this has ONLY been tested on Linux, specifically RedHat Linux.
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
135 In particular, this milter makes no attempt to understand IPv6. Your
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
136 mileage will vary. You will need at a minimum a C++ compiler with a
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
137 minimally thread safe STL implementation. The distribution includes a
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
138 test.cpp program. If it fails this milter won't work. If it passes,
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
139 this milter might work.
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
140 </para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
141 <para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
142 Modify your sendmail.mc by removing all the "FEATURE(dnsbl" lines, add
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
143 the following line in your sendmail.mc and rebuild the .cf file
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
144 </para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
145 <para><screen>INPUT_MAIL_FILTER(`dnsbl', `S=local:/var/run/dnsbl/dnsbl.sock, F=T, T=C:30s;S:5m;R:5m;E:5m')</screen></para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
146 <para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
147 Modify the default <citerefentry>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
148 <refentrytitle>@PACKAGE@.conf</refentrytitle> <manvolnum>5</manvolnum>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
149 </citerefentry> configuration.
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
150 </para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
151 </refsect1>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
152
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
153 <refsect1 id='configuration.1'>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
154 <title>Configuration</title>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
155 <para>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
156 The configuration file is documented in <citerefentry>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
157 <refentrytitle>@PACKAGE@.conf</refentrytitle> <manvolnum>5</manvolnum>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
158 </citerefentry>. Any change to the config file, or any file included
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
159 from that config file, will cause it to be reloaded within three
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
160 minutes.
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
161 </para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
162 </refsect1>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
163
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
164 <refsect1 id='introduction.1'>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
165 <title>Introduction</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
166 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
167 Consider the case of a mail server that is acting as secondary MX for a
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
168 collection of clients, each of which has a collection of mail domains.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
169 Each client may use their own collection of DNSBLs on their primary mail
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
170 server. We present here a mechanism whereby the backup mail server can
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
171 use the correct set of DNSBLs for each recipient for each message. As a
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
172 side-effect, it gives us the ability to customize the set of DNSBLs on a
183
e8a822f9cca0 embedded dcc filtering
carl
parents: 180
diff changeset
173 per-recipient basis, so that fred@example.com could use LOCAL and the
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
174 SBL, where all other users @example.com use only the SBL.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
175 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
176 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
177 This milter can also verify the envelope from/recipient pairs with the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
178 primary MX server. This allows the backup mail servers to properly
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
179 reject mail sent to invalid addresses. Otherwise, the backup mail
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
180 servers will accept that mail, and then generate a bounce message when
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
181 the message is forwarded to the primary server (and rejected there with
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
182 no such user). These rejections are the primary cause of such backscatter.
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
183 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
184 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
185 This milter will also decode (uuencode, base64, mime, html entity, url
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
186 encodings) and scan for HTTP and HTTPS URLs and bare hostnames in the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
187 body of the mail. If any of those host names have A or NS records on
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
188 the SBL (or a single configurable DNSBL), the mail will be rejected
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
189 unless previously whitelisted. This milter also counts the number of
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
190 invalid HTML tags, and can reject mail if that count exceeds your
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
191 specified limit.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
192 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
193 <para>
259
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
194 This milter can also impose hourly and daily rate
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
195 limits on the number of recipients accepted from SMTP
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
196 AUTH connections, that would otherwise be allowed to
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
197 relay thru this mail server with no spam filtering. If
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
198 the connection does not use SMTP AUTH, the rate limits
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
199 may be specified by the mail from email address or
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
200 domain.
136
f4746d8a12a3 add smtp auth rate limits
carl
parents: 127
diff changeset
201 </para>
f4746d8a12a3 add smtp auth rate limits
carl
parents: 127
diff changeset
202 <para>
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
203 This milter can also impose hourly and daily limits on the number of
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
204 different ip addresses used for SMTP AUTH connections. If a single
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
205 user is connecting from too many different ip addresses, we presume that
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
206 their authentication credentials have been discovered, and block their
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
207 outgoing mail.
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
208 </para>
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
209 <para>
162
c4bce911c276 don't add auto whitelist for A to A
carl
parents: 161
diff changeset
210 Consider the case of a message from A to B passing thru this milter. If
c4bce911c276 don't add auto whitelist for A to A
carl
parents: 161
diff changeset
211 that message is not blocked, then we might eventually see a reply
156
a220bfb9211f add auto whitelisting
carl
parents: 153
diff changeset
212 message from B to A. If the filtering context for A includes an
162
c4bce911c276 don't add auto whitelist for A to A
carl
parents: 161
diff changeset
213 autowhite entry, and that context does <emphasis>not</emphasis> cover B
c4bce911c276 don't add auto whitelist for A to A
carl
parents: 161
diff changeset
214 as a recipient, then this milter will add an entry in that file to
c4bce911c276 don't add auto whitelist for A to A
carl
parents: 161
diff changeset
215 whitelist such replies for a configurable time period. Suppose A and B
c4bce911c276 don't add auto whitelist for A to A
carl
parents: 161
diff changeset
216 are in the same domain, or at least use the same filtering context. In
c4bce911c276 don't add auto whitelist for A to A
carl
parents: 161
diff changeset
217 that case we don't want to add a whitelist entry for B, since that would
c4bce911c276 don't add auto whitelist for A to A
carl
parents: 161
diff changeset
218 then allow spammers to send mail from B (forged) to B. Such autowhite
160
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
219 files need to be writeable by the dnsbl user, where all the other dnsbl
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
220 configuration files only need to be readable by the dnsbl user.
156
a220bfb9211f add auto whitelisting
carl
parents: 153
diff changeset
221 </para>
a220bfb9211f add auto whitelisting
carl
parents: 153
diff changeset
222 <para>
176
4ec928b24bab allow manual whitelisting with stamp 1 to remove a whitelist entry
carl
parents: 175
diff changeset
223 You can manually add such an autowhite entry, by appending a single
4ec928b24bab allow manual whitelisting with stamp 1 to remove a whitelist entry
carl
parents: 175
diff changeset
224 text line to the autowhitelist file, using something like
4ec928b24bab allow manual whitelisting with stamp 1 to remove a whitelist entry
carl
parents: 175
diff changeset
225 <command>echo "$mail 0" >>$autowhitefile</command>.
4ec928b24bab allow manual whitelisting with stamp 1 to remove a whitelist entry
carl
parents: 175
diff changeset
226 You can manually remove such an autowhite entry, by appending a single
4ec928b24bab allow manual whitelisting with stamp 1 to remove a whitelist entry
carl
parents: 175
diff changeset
227 text line to the autowhitelist file, using something like
4ec928b24bab allow manual whitelisting with stamp 1 to remove a whitelist entry
carl
parents: 175
diff changeset
228 <command>echo "$mail 1" >>$autowhitefile</command>.
4ec928b24bab allow manual whitelisting with stamp 1 to remove a whitelist entry
carl
parents: 175
diff changeset
229 </para>
4ec928b24bab allow manual whitelisting with stamp 1 to remove a whitelist entry
carl
parents: 175
diff changeset
230 <para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
231 The DNSBL milter reads a text configuration file (dnsbl.conf) on
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
232 startup, and whenever the config file (or any of the referenced include
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
233 files) is changed. The entire configuration file is case insensitive.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
234 If the configuration cannot be loaded due to a syntax error, the milter
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
235 will log the error and quit. If the configuration cannot be reloaded
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
236 after being modified, the milter will log the error and send an email to
152
c7fc218686f5 gpl3, block mail to recipients that cannot reply
carl
parents: 149
diff changeset
237 root from dnsbl@$hostname. You probably want to add dnsbl@$hostname
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
238 to your /etc/mail/virtusertable since otherwise sendmail will reject
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
239 that message.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
240 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
241 </refsect1>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
242
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
243 <refsect1 id='dcc.1'>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
244 <title>DCC Issues</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
245 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
246 If you are also using the <ulink
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
247 url="http://www.rhyolite.com/anti-spam/dcc/">DCC</ulink> milter, there
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
248 are a few considerations. You may need to whitelist senders from the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
249 DCC bulk detector, or from the DNS based lists. Those are two very
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
250 different reasons for whitelisting. The former is done thru the DCC
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
251 whiteclnt config file, the later is done thru the DNSBL milter config
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
252 file.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
253 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
254 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
255 You may want to blacklist some specific senders or sending domains.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
256 This could be done thru either the DCC (on a global basis, or for a
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
257 specific single recipient). We prefer to do such blacklisting via the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
258 DNSBL milter config, since it can be done for a collection of recipient
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
259 mail domains. The DCC approach has the feature that you can capture the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
260 entire message in the DCC log files. The DNSBL milter approach has the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
261 feature that the mail is rejected earlier (at RCPT TO time), and the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
262 sending machine just gets a generic "550 5.7.1 no such user" message.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
263 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
264 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
265 The DCC whiteclnt file can be included in the DNSBL milter config by the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
266 dcc_to and dcc_from statements. This will import the (env_to, env_from,
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
267 and substitute mail_host) entries from the DCC config into the DNSBL
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
268 config. This allows using the DCC config as the single point for
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
269 white/blacklisting.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
270 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
271 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
272 Consider the case where you have multiple clients, each with their own
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
273 mail servers, and each running their own DCC milters. Each client is
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
274 using the DCC facilities for envelope from/to white/blacklisting.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
275 Presumably you can use rsync or scp to fetch copies of your clients DCC
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
276 whiteclnt files on a regular basis. Your mail server, acting as a
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
277 backup MX for your clients, can use the DNSBL milter, and include those
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
278 client DCC config files. The envelope from/to white/blacklisting will
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
279 be appropriately tagged and used only for the domains controlled by each
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
280 of those clients.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
281 </para>
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
282 <para>
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
283 You can now use (via dccifd) different dcc filtering parameters on a per
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
284 context basis. See the dcc_greylist and dcc_bulk_threshold statements
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
285 in the <citerefentry> <refentrytitle>@PACKAGE@.conf</refentrytitle>
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
286 <manvolnum>5</manvolnum> </citerefentry> configuration. Those
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
287 statements are only active if you supply the <option>-b</option> option
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
288 on the dnsbl command line. If you use the dcc via the standard dcc
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
289 milter (dccm), then connections from clients that use SMTP AUTH are
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
290 still subject to greylisting. If you use the dcc via dccifd and this
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
291 milter, then connections from clients that use SMTP AUTH are never
180
7a722f482bfb embedded dcc filtering
carl
parents: 179
diff changeset
292 subject to greylisting. As part of this per-user greylisting, you need
7a722f482bfb embedded dcc filtering
carl
parents: 179
diff changeset
293 to move the dnsblnogrey file from the config directory to something
7a722f482bfb embedded dcc filtering
carl
parents: 179
diff changeset
294 like /var/dcc/userdirs/local/dnsblnogrey/whiteclnt so the dccifd will
7a722f482bfb embedded dcc filtering
carl
parents: 179
diff changeset
295 properly ignore greylisting for those recipients that don't want it.
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
296 </para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
297 </refsect1>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
298
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
299 <refsect1 id='definitions.1'>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
300 <title>Definitions</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
301 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
302 CONTEXT - a collection of parameters that defines the filtering context
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
303 to be used for a collection of envelope recipient addresses. The
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
304 context includes such things as the list of DNSBLs to be used, and the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
305 various content filtering parameters.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
306 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
307 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
308 DNSBL - a named DNS based blocking list is defined by a dns suffix (e.g.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
309 sbl-xbl.spamhaus.org) and a message string that is used to generate the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
310 "550 5.7.1" smtp error return code. The names of these DNSBLs will be
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
311 used to define the DNSBL-LISTs.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
312 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
313 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
314 DNSBL-LIST - a named list of DNSBLs that will be used for specific
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
315 recipients or recipient domains.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
316 </para>
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
317 <para>
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
318 DNSWL - a named DNS based white list is defined by a dns suffix (e.g.
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
319 list.dnswl.org) and an integer level. If the level is greater than or
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
320 equal to x in the 127.0.z.x return code from the white list, then the
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
321 ip address is considered to match, and the message will be whitelisted.
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
322 The names of these DNSWLs will be used to define the DNSWL-LISTs.
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
323 </para>
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
324 <para>
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
325 DNSWL-LIST - a named list of DNSWLs that will be used for specific
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
326 recipients or recipient domains.
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
327 </para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
328 </refsect1>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
329
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
330 <refsect1 id='filtering.1'>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
331 <title>Filtering Procedure</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
332 <para>
152
c7fc218686f5 gpl3, block mail to recipients that cannot reply
carl
parents: 149
diff changeset
333 The SMTP envelope 'from' and 'to' values are used in various checks.
c7fc218686f5 gpl3, block mail to recipients that cannot reply
carl
parents: 149
diff changeset
334 The first check is to see if a reply message (swapping the env_from and
160
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
335 env_to values) would be unconditionally blocked (just based on the
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
336 envelope from address). That check is similar to the main check
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
337 described below, but there is no body content to be scanned, and there
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
338 is no client connection ip address to be checked against DNSBLs. If
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
339 such a reply message would be blocked, we also block the original
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
340 outgoing message. This prevents folks from sending mail to recipients
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
341 that are unable to reply.
152
c7fc218686f5 gpl3, block mail to recipients that cannot reply
carl
parents: 149
diff changeset
342 </para>
c7fc218686f5 gpl3, block mail to recipients that cannot reply
carl
parents: 149
diff changeset
343 <para>
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
344 If the client has authenticated with sendmail, the recipient rate limits
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
345 and connection ip address limits are
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
346 checked. If the authenticated user has not exceeded the hourly or daily rate
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
347 limits, then the mail is accepted, the filtering contexts are not used,
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
348 the dns lists are not checked, and the body content is not scanned. These
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
349 rate limits can also be applied to unauthenticated connections, in which case
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
350 the envelope from value is used as the authentication id for lookup purposes.
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
351 If
136
f4746d8a12a3 add smtp auth rate limits
carl
parents: 127
diff changeset
352 the client has not authenticated with sendmail, we follow these steps
f4746d8a12a3 add smtp auth rate limits
carl
parents: 127
diff changeset
353 for each recipient.
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
354 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
355 <orderedlist>
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
356 <listitem><para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
357 The envelope to email address is used to find an initial filtering
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
358 context. We first look for a context that specified the full email
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
359 address in the env_to statement. If that is not found, we look for a
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
360 context that specified the entire domain name of the envelope recipient
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
361 in the env_to statement. If that is not found, we look for a context
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
362 that specified the user@ part of the envelope recipient in the env_to
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
363 statement. If that is not found, we use the first top level context
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
364 defined in the config file.
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
365 </para></listitem>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
366 <listitem><para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
367 The initial filtering context may redirect to a child context based on
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
368 the values in the initial context's env_from statement. We look for [1)
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
369 the full envelope from email address, 2) the domain name part of the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
370 envelope from address, 3) the user@ part of the envelope from address]
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
371 in that context's env_from statement, with values that point to a child
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
372 context. If such an entry is found, we switch to that child filtering
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
373 context.
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
374 </para></listitem>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
375 <listitem><para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
376 We lookup [1) the full envelope from email address, 2) the domain name
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
377 part of the envelope from address, 3) the user@ part of the envelope
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
378 from address] in the filtering context env_from statement. That results
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
379 in one of (white, black, unknown, inherit).
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
380 </para></listitem>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
381 <listitem><para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
382 If the answer is black, mail to this recipient is rejected with "no such
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
383 user", and the dns lists are not checked.
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
384 </para></listitem>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
385 <listitem><para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
386 If the answer is white, mail to this recipient is accepted and the dns
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
387 lists are not checked.
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
388 </para></listitem>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
389 <listitem><para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
390 If the answer is unknown, we don't reject yet, but the dns lists will be
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
391 checked, and the content may be scanned.
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
392 </para></listitem>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
393 <listitem><para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
394 If the answer is inherit, we repeat the envelope from search in the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
395 parent context.
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
396 </para></listitem>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
397 <listitem><para>
233
5c3e9bf45bb5 Add whitelisting by regex expression filtering.
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
398 If the mail has not been accepted or rejected yet, and the filtering
5c3e9bf45bb5 Add whitelisting by regex expression filtering.
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
399 context (or any ancestor context) specifies a non-empty whitelist regular
5c3e9bf45bb5 Add whitelisting by regex expression filtering.
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
400 expression, then we check the envelope from value against that regex.
5c3e9bf45bb5 Add whitelisting by regex expression filtering.
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
401 The mail is accepted if the envelope from value matches the specified regular
5c3e9bf45bb5 Add whitelisting by regex expression filtering.
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
402 expression.
5c3e9bf45bb5 Add whitelisting by regex expression filtering.
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
403 </para></listitem>
5c3e9bf45bb5 Add whitelisting by regex expression filtering.
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
404 <listitem><para>
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
405 If the mail has not been accepted or rejected yet, the dns white lists
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
406 specified in the filtering context are checked and the mail is accepted
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
407 if any list has an A record for the standard dns based lookup scheme
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
408 (reversed octets of the client followed by the dns suffix) with a final
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
409 octet greater than or equal to the level specified for that dnswl.
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
410 </para></listitem>
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
411 <listitem><para>
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
412 If the mail has not been accepted or rejected yet, the dns black lists
168
6bac960af6b4 add generic reverse dns filtering regex
carl
parents: 167
diff changeset
413 specified in the filtering context are checked and the mail is rejected
6bac960af6b4 add generic reverse dns filtering regex
carl
parents: 167
diff changeset
414 if any list has an A record for the standard dns based lookup scheme
6bac960af6b4 add generic reverse dns filtering regex
carl
parents: 167
diff changeset
415 (reversed octets of the client followed by the dns suffix).
6bac960af6b4 add generic reverse dns filtering regex
carl
parents: 167
diff changeset
416 </para></listitem>
6bac960af6b4 add generic reverse dns filtering regex
carl
parents: 167
diff changeset
417 <listitem><para>
6bac960af6b4 add generic reverse dns filtering regex
carl
parents: 167
diff changeset
418 If the mail has not been accepted or rejected yet, and the filtering
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
419 context (or any ancestor context) requires matching reverse dns client
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
420 name, the mail is rejected if the client name is empty or forged.
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
421 </para></listitem>
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
422 <listitem><para>
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
423 If the mail has not been accepted or rejected yet, and the filtering
170
bd33eaccfed8 fix pre/post scripts in rpm spec file
carl
parents: 168
diff changeset
424 context (or any ancestor context) specifies a non-empty generic regular
bd33eaccfed8 fix pre/post scripts in rpm spec file
carl
parents: 168
diff changeset
425 expression, then we check the fully qualified client name (obtained via
bd33eaccfed8 fix pre/post scripts in rpm spec file
carl
parents: 168
diff changeset
426 the sendmail macro "_"). The mail is rejected if the client name
bd33eaccfed8 fix pre/post scripts in rpm spec file
carl
parents: 168
diff changeset
427 matches the specified regular expression.
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
428 </para></listitem>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
429 <listitem><para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
430 If the mail has not been accepted or rejected yet, we look for a
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
431 verification context, which is the closest ancestor of the filtering
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
432 context that both specifies a verification host, and which covers the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
433 envelope to address. If we find such a verification context, and the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
434 verification host is not our own hostname, we open an smtp conversation
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
435 with that verification host. The current envelope from and recipient to
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
436 values are passed to that verification host. If we receive a 5xy
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
437 response those commands, we reject the current recipient with "no such
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
438 user".
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
439 </para></listitem>
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
440 <listitem><para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
441 If the mail has not been accepted or rejected yet, and the filtering
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
442 context enables content filtering, and this is the first such recipient
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
443 in this smtp transaction, we set the content filtering parameters from
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
444 this context, and enable content filtering for the body of this message.
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
445 </para></listitem>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
446 </orderedlist>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
447 <para>
160
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
448 For each recipient that was accepted, we search for an autowhite entry
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
449 starting in the reply filtering context. If an autowhite entry is found,
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
450 we add the recipient to that auto whitelist file. This will prevent reply
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
451 messages from being blocked by the dnsbl or content filtering.
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
452 </para>
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
453 <para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
454 If content filtering is enabled for this body, the mail text is decoded
119
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
455 (uuencode, base64, mime, html entity, url encodings), and scanned for HTTP
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
456 and HTTPS URLs or bare host names. Hostnames must be either ip address
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
457 literals, or must end in a string defined by the TLD list. The first
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
458 &lt;configurable&gt; host names are checked as follows.
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
459 </para>
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
460 <para>
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
461 The only known list that is suitable for the content filter DNSBL is the
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
462 SBL. If the content filter DNSBL is defined, and any of those host
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
463 names resolve to ip addresses that are on that DNSBL (or have
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
464 nameservers that are on that list), and the host name is not on the
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
465 &lt;configurable&gt; ignore list, the mail is rejected.
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
466 </para>
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
467 <para>
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
468 If the content uribl DNSBL is defined, and any of those host names are
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
469 on that DNSBL, and the host name is not on the &lt;configurable&gt;
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
470 ignore list, the mail is rejected. There are three lists that are suitable
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
471 here, URIBL, SURBL, and DBL.
119
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
472 </para>
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
473 <para>
167
9b129ed78d7d actually use spamassassin result, allow build without spam assassin, only call it if some recipient needs it.
carl
parents: 164
diff changeset
474 If any non-whitelisted recipient has a filtering context with a non-zero
9b129ed78d7d actually use spamassassin result, allow build without spam assassin, only call it if some recipient needs it.
carl
parents: 164
diff changeset
475 spamassassin limit, then the message is passed thru spamassassin (via
9b129ed78d7d actually use spamassassin result, allow build without spam assassin, only call it if some recipient needs it.
carl
parents: 164
diff changeset
476 spamc), and the message is rejected for those recipients with spamassassin
203
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 201
diff changeset
477 limits less than the resulting spamassassin score. For example, a
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 201
diff changeset
478 spamassassin limit of three will reject messages with spamassassin scores
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
479 of four or greater. If the filtering context has a spamassassin limit of
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
480 zero, then spamassassin is not called (or if called the results are not used)
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
481 for this recipient.
203
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 201
diff changeset
482 </para>
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 201
diff changeset
483 <para>
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 201
diff changeset
484 If any non-whitelisted recipient has a filtering context that specifies
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 201
diff changeset
485 DCC greylisting, then the message is passed thru the DCC bulk detector,
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 201
diff changeset
486 and the message is greylisted (for all recipients) if the DCC says this
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 201
diff changeset
487 message should be delayed.
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 201
diff changeset
488 </para>
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 201
diff changeset
489 <para>
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 201
diff changeset
490 If any non-whitelisted recipient has a filtering context with a non-zero
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 201
diff changeset
491 DCC bulk threshold, then the message is passed thru the DCC bulk detector,
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 201
diff changeset
492 and the message is rejected for those recipients with DCC thresholds less
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 201
diff changeset
493 than or equal to the DCC bulk score.
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
494 </para>
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
495 <para>
119
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
496 We also scan for excessive bad html tags, and if a &lt;configurable&gt;
d9d2f8699621 uribl patch from Jeff Evans <jeffe@tricab.com>
carl
parents: 115
diff changeset
497 limit is exceeded, the mail is rejected.
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
498 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
499 </refsect1>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
500
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
501 <refsect1 id='access.1'>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
502 <title>Sendmail access vs. DNSBL</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
503 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
504 With the standard sendmail.mc dnsbl FEATURE, the dnsbl checks may be
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
505 suppressed by entries in the /etc/mail/access database. For example,
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
506 suppose you control a /18 of address space, and have allocated some /24s
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
507 to some clients. You have access entries like
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
508 <literallayout class="monospaced"><![CDATA[
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
509 192.168.4 OK
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
510 192.168.17 OK]]></literallayout>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
511 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
512 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
513 to allow those clients to smarthost thru your mail server. Now if one
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
514 of those clients happens get infected with a virus that turns a machine
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
515 into an open proxy, and their 192.168.4.45 lands on the SBL-XBL, you
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
516 will still wind up allowing that infected machine to smarthost thru your
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
517 mail servers.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
518 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
519 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
520 With this DNSBL milter, the sendmail access database cannot override the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
521 dnsbl checks, so that machine won't be able to send mail to or thru your
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
522 smarthost mail server (unless the virus/proxy can use smtp-auth).
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
523 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
524 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
525 Using the standard sendmail features, you would add access entries to
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
526 allow hosts on your local network to relay thru your mail server. Those
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
527 OK entries in the sendmail access database will override all the dnsbl
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
528 checks. With this DNSBL milter, you will need to have the local users
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
529 authenticate with smtp-auth to get the same effect. You might find
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
530 <ulink
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
531 url="http://www.ists.dartmouth.edu/classroom/sendmail-ssl-how-to.php">
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
532 these directions</ulink> helpful for setting up smtp-auth if you are on
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
533 RH Linux.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
534 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
535 </refsect1>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
536
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
537 <refsect1 id='performance.1'>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
538 <title>Performance Issues</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
539 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
540 Consider a high volume high performance machine running sendmail. Each
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
541 sendmail process can do its own dns resolution. Typically, such dns
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
542 resolver libraries are not thread safe, and so must be protected by some
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
543 sort of mutex in a threaded environment. When we add a milter to
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
544 sendmail, we now have a collection of sendmail processes, and a
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
545 collection of milter threads.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
546 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
547 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
548 We will be doing a lot of dns lookups per mail message, and at least
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
549 some of those will take many tens of seconds. If all this dns work is
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
550 serialized inside the milter, we have an upper limit of about 25K mail
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
551 messages per day. That is clearly not sufficient for many sites.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
552 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
553 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
554 Since we want to do parallel dns resolution across those milter threads,
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
555 we add another collection of dns resolver processes. Each sendmail
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
556 process is talking to a milter thread over a socket, and each milter
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
557 thread is talking to a dns resolver process over another socket.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
558 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
559 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
560 Suppose we are processing 20 messages per second, and each message
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
561 requires 20 seconds of dns work. Then we will have 400 sendmail
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
562 processes, 400 milter threads, and 400 dns resolver processes. Of
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
563 course that steady state is very unlikely to happen.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
564 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
565 </refsect1>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
566
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
567
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
568 <refsect1 id='rejected.1'>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
569 <title>Rejected Ideas</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
570 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
571 The following ideas have been considered and rejected.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
572 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
573 <para>
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
574 Add max_recipients setting to the context configuration. Recipients in
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
575 excess of that limit will be rejected, and all the non-whitelisted
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
576 recipients will be removed. Current spammers *very* rarely send more
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
577 than ten recipients in a single smtp transaction, so this won't stop any
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
578 significant amount of spam.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
579 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
580 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
581 Add poison addresses to the configuration. If any recipient is
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
582 poison, all recipients are rejected even if they would be whitelisted,
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
583 and the data is rejected if sent. I have a collection of spam trap
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
584 addresses that would be suitable for such use. Based on my log files,
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
585 any mail to those spam trap addresses is rejected based on either dnsbl
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
586 lookups or the DCC. So this won't result in blocking any additional
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
587 spam.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
588 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
589 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
590 Add an option to only allow one recipient if the return path is
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
591 empty. Based on my log files, there is no mail that violates this
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
592 check.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
593 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
594 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
595 Reject the mail if the envelope from domain name contains any MX
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
596 records pointing to 127.0.0.0/8. I don't see any significant amount of
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
597 spam sent with such domain names.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
598 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
599 </refsect1>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
600
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
601 <refsect1 id='todo.1'>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
602 <title>TODO</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
603 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
604 The following ideas are under consideration.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
605 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
606 <para>
276
19ff60eaab74 more tld entries
Carl Byington <carl@five-ten-sg.com>
parents: 270
diff changeset
607 Add config switch to require the HELO argument to resolve to an ip address.
19ff60eaab74 more tld entries
Carl Byington <carl@five-ten-sg.com>
parents: 270
diff changeset
608 </para>
19ff60eaab74 more tld entries
Carl Byington <carl@five-ten-sg.com>
parents: 270
diff changeset
609 <para>
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
610 Add white/unknown to config for smtp authenticated connections. Currently
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
611 any authenticated connection is fully whitelisted. The only spam control
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
612 on those connections is rate limiting. This feature would allow content based
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
613 spam controls to be applied even to authenticated connections. Add
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
614 context/authenticated_dnsbl_list and context/content/authenticated.
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
615 </para>
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
616 <para>
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
617 Add an optional list of domains to be enforced on the env_from value for
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
618 authenticated connections. User abc could be restricted to envelope from
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
619 values of a.com and b.com, user def could be restricted to envelope from
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
620 values of dd.com and ee.com.
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
621 </para>
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
622 <para>
115
07e5d4721213 use larger resolver buffer
carl
parents: 114
diff changeset
623 Look for href="hostname/path" strings that are missing the required
07e5d4721213 use larger resolver buffer
carl
parents: 114
diff changeset
624 http:// protocol header. Such references are still clickable in common
07e5d4721213 use larger resolver buffer
carl
parents: 114
diff changeset
625 mail software.
07e5d4721213 use larger resolver buffer
carl
parents: 114
diff changeset
626 </para>
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
627 <para>
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
628 Add spf to the white/black/unknown values in env_from blocks. This
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
629 results in whitelisting that envelope from value as long as the connection
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
630 is made from an ip address listed in the domain spf txt record.
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
631 </para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
632 </refsect1>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
633
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
634 <refsect1 id='copyright.1'>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
635 <title>Copyright</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
636 <para>
261
92a98e661a0b update documentation for newer xml dtd
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
637 Copyright (C) 2012 by 510 Software Group &lt;carl@five-ten-sg.com&gt;
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
638 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
639 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
640 This program is free software; you can redistribute it and/or modify it
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
641 under the terms of the GNU General Public License as published by the
160
b3ed72ee6564 allow manual updates to auto whitelist files
carl
parents: 158
diff changeset
642 Free Software Foundation; either version 3, or (at your option) any
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
643 later version.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
644 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
645 <para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
646 You should have received a copy of the GNU General Public License along
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
647 with this program; see the file COPYING. If not, please write to the
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
648 Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
649 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
650 </refsect1>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
651
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
652 <refsect1 id='version.1'>
201
752d4315675c add reference to mercurial repository in the documentation
Carl Byington <carl@five-ten-sg.com>
parents: 187
diff changeset
653 <title>Version</title>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
654 <para>
201
752d4315675c add reference to mercurial repository in the documentation
Carl Byington <carl@five-ten-sg.com>
parents: 187
diff changeset
655 @VERSION@
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
656 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
657 </refsect1>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
658 </refentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
659
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
660
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
661 <refentry id="@PACKAGE@.conf.5">
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
662 <refentryinfo>
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
663 <date>2013-05-22</date>
261
92a98e661a0b update documentation for newer xml dtd
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
664 <author>
92a98e661a0b update documentation for newer xml dtd
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
665 <firstname>Carl</firstname>
92a98e661a0b update documentation for newer xml dtd
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
666 <surname>Byington</surname>
92a98e661a0b update documentation for newer xml dtd
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
667 <affiliation><orgname>510 Software Group</orgname></affiliation>
92a98e661a0b update documentation for newer xml dtd
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
668 </author>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
669 </refentryinfo>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
670
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
671 <refmeta>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
672 <refentrytitle>@PACKAGE@.conf</refentrytitle>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
673 <manvolnum>5</manvolnum>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
674 <refmiscinfo>@PACKAGE@ @VERSION@</refmiscinfo>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
675 </refmeta>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
676
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
677 <refnamediv id='name.5'>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
678 <refname>@PACKAGE@.conf</refname>
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
679 <refpurpose>configuration file for @PACKAGE@ sendmail milter</refpurpose>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
680 </refnamediv>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
681
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
682 <refsynopsisdiv id='synopsis.5'>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
683 <title>Synopsis</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
684 <cmdsynopsis>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
685 <command>@PACKAGE@.conf</command>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
686 </cmdsynopsis>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
687 </refsynopsisdiv>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
688
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
689 <refsect1 id='description.5'>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
690 <title>Description</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
691 <para>The <command>@PACKAGE@.conf</command> configuration file is
148
9330b8d6a56b add documentation fixes, allow env_from target of inherit
carl
parents: 144
diff changeset
692 specified by this partial bnf description. Comments start with //
9330b8d6a56b add documentation fixes, allow env_from target of inherit
carl
parents: 144
diff changeset
693 or # and extend to the end of the line. To include the contents
9330b8d6a56b add documentation fixes, allow env_from target of inherit
carl
parents: 144
diff changeset
694 of some file verbatim in the dnsbl.conf file, use
9330b8d6a56b add documentation fixes, allow env_from target of inherit
carl
parents: 144
diff changeset
695 <literallayout class="monospaced"><![CDATA[include "<file>";]]></literallayout>
9330b8d6a56b add documentation fixes, allow env_from target of inherit
carl
parents: 144
diff changeset
696 </para>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
697
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
698 <literallayout class="monospaced"><![CDATA[
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
699 CONFIG = {CONTEXT ";"}+
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
700 CONTEXT = "context" NAME "{" {STATEMENT}+ "}"
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
701 STATEMENT = (DNSBL | DNSBLLIST | DNSWL | DNSWLLIST | CONTENT | ENV-TO
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
702 | VERIFY | GENERIC | W_REGEX | AUTOWHITE | CONTEXT | ENV-FROM
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
703 | RATE-LIMIT | REQUIRERDNS) ";"
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
704
124
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 122
diff changeset
705 DNSBL = "dnsbl" NAME DNSPREFIX ERROR-MSG1
255
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 253
diff changeset
706 DNSBLLIST = "dnsbl_list" {NAME}*
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
707
255
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 253
diff changeset
708 DNSWL = "dnswl" NAME DNSPREFIX LEVEL
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 253
diff changeset
709 DNSWLLIST = "dnswl_list" {NAME}*
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 253
diff changeset
710 LEVEL = INTEGER
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
711
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
712 REQUIRERDNS = "require_rdns" ("yes" | "no")
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
713
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
714 CONTENT = "content" ("on" | "off") "{" {CONTENT-ST}+ "}"
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
715 CONTENT-ST = (FILTER | URIBL | IGNORE | TLD | HTML-TAGS | HTML-LIMIT |
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
716 HOST-LIMIT | SPAMASS | REQUIRE | DCCGREY | DCCBULK) ";"
124
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 122
diff changeset
717 FILTER = "filter" DNSPREFIX ERROR-MSG2
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 122
diff changeset
718 URIBL = "uribl" DNSPREFIX ERROR-MSG3
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
719 IGNORE = "ignore" "{" {HOSTNAME [";"]}+ "}"
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
720 TLD = "tld" "{" {TLD [";"]}+ "}"
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
721 HTML-TAGS = "html_tags" "{" {HTMLTAG [";"]}+ "}"
124
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 122
diff changeset
722 ERROR-MSG1 = string containing exactly two %s replacement tokens
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 122
diff changeset
723 both are replaced with the client ip address
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 122
diff changeset
724 ERROR-MSG2 = string containing exactly two %s replacement tokens
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 122
diff changeset
725 the first is replaced with the hostname, and the second
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 122
diff changeset
726 is replaced with the ip address
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 122
diff changeset
727 ERROR-MSG3 = string containing exactly two %s replacement tokens
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 122
diff changeset
728 both are replaced with the hostname
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
729
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
730 HTML-LIMIT = "html_limit" ("on" INTEGER ERROR-MSG | "off")
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
731
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
732 HOST-LIMIT = "host_limit" ("on" INTEGER ERROR-MSG | "off" |
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
733 "soft" INTEGER)
178
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
734 SPAMASS = "spamassassin" INTEGER
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
735 REQUIRE = "require_match" ("yes" | "no")
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
736 DCCGREY = "dcc_greylist" ("yes" | "no")
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
737 DCCBULK = "dcc_bulk_threshold" (INTEGER | "many" | "off")
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
738
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
739 ENV-TO = "env_to" "{" {(TO-ADDR | DCC-TO)}+ "}"
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
740 TO-ADDR = ADDRESS [";"]
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
741 DCC-TO = "dcc_to" ("ok" | "many") "{" DCCINCLUDEFILE "}" ";"
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
742
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
743 VERIFY = "verify" HOSTNAME ";"
168
6bac960af6b4 add generic reverse dns filtering regex
carl
parents: 167
diff changeset
744 GENERIC = "generic" REGULAREXPRESSION ERROR-MSG4 ";"
233
5c3e9bf45bb5 Add whitelisting by regex expression filtering.
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
745 W-REGEX = "white_regex" REGULAREXPRESSION ";"
168
6bac960af6b4 add generic reverse dns filtering regex
carl
parents: 167
diff changeset
746 ERROR-MSG4 = string containing exactly one %s replacement token
6bac960af6b4 add generic reverse dns filtering regex
carl
parents: 167
diff changeset
747 which is replaced with the client name
153
8d7c439bb6fa add auto whitelisting
carl
parents: 152
diff changeset
748 AUTOWHITE = "autowhite" DAYS FILENAME ";"
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
749
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
750 ENV_FROM = "env_from" [DEFAULT] "{" {(FROM-ADDR | DCC-FROM)}+ "}"
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
751 FROM-ADDR = ADDRESS VALUE [";"]
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
752 DCC-FROM = "dcc_from" "{" DCCINCLUDEFILE "}" ";"
136
f4746d8a12a3 add smtp auth rate limits
carl
parents: 127
diff changeset
753
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
754 RATE-LIMIT = "rate_limit" DEFAULT_RCPT_LIMIT DAILY_MULTIPLE_RCPT
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
755 DEFAULT_IP_LIMIT DAILY_MULTIPLE_IP "{" (RATE)+ "}"
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
756 RATE = USER RCPTLIMIT IPLIMIT ";"
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
757 RCPTLIMIT = INTEGER
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
758 DEFAULT_RCPT_LIMIT = INTEGER
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
759 DAILY_MULTIPLE_RCPT = INTEGER
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
760 DEFAULT_IP_LIMIT = INTEGER
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
761 DAILY_MULTIPLE_IP = INTEGER
136
f4746d8a12a3 add smtp auth rate limits
carl
parents: 127
diff changeset
762
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
763 DEFAULT = ("white" | "black" | "unknown" | "inherit" | "")
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
764 ADDRESS = (USER@ | DOMAIN | USER@DOMAIN)
148
9330b8d6a56b add documentation fixes, allow env_from target of inherit
carl
parents: 144
diff changeset
765 VALUE = ("white" | "black" | "unknown" | "inherit" | CHILD-CONTEXT-NAME)]]></literallayout>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
766 </refsect1>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
767
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
768 <refsect1 id='sample.5'>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
769 <title>Sample</title>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
770 <literallayout class="monospaced"><![CDATA[
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
771 context main-default {
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
772 // outbound dnsbl filtering to catch our own customers that end up on the sbl
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
773 dnsbl sbl sbl-xbl.spamhaus.org "Mail from %s rejected - sbl; see http://www.spamhaus.org/query/bl?ip=%s";
174
da0c41b9f672 don't whitelist addresses with embedded spaces
carl
parents: 172
diff changeset
774 dnsbl_list sbl;
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
775
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
776 // outbound content filtering to prevent our own customers from sending spam
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
777 content on {
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
778 filter sbl-xbl.spamhaus.org "Mail containing %s rejected - sbl; see http://www.spamhaus.org/query/bl?ip=%s";
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
779 uribl multi.surbl.org "Mail containing %s rejected - surbl; see http://www.surbl.org/surbl-analysis?d=%s";
259
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
780 #uribl multi.uribl.com "Mail containing %s rejected - uribl; see http://l.uribl.com/?d=%s";
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
781 #uribl dbl.spamhaus.org "Mail containing %s rejected - dbl; see http://www.spamhaus.org/query/domain?domain=%s";
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
782 ignore { include "hosts-ignore.conf"; };
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
783 tld { include "tld.conf"; };
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
784 html_tags { include "html-tags.conf"; };
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
785 html_limit on 20 "Mail containing excessive bad html tags rejected";
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
786 html_limit off;
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
787 host_limit on 20 "Mail containing excessive host names rejected";
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
788 host_limit soft 20;
178
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
789 spamassassin 4;
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
790 require_match yes;
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
791 dcc_greylist yes;
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
792 dcc_bulk_threshold 50;
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
793 };
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
794
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
795 // backscatter prevention - do not send bounces for mail that we accepted but could not forward
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
796 // we only send bounces to our own customers
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
797 env_from unknown {
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
798 "<>" black;
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
799 };
136
f4746d8a12a3 add smtp auth rate limits
carl
parents: 127
diff changeset
800
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
801 // hourly recipient rate limit by smtp auth client id, or unauthenticated mail from address
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
802 // hourly unique ip addresses by smtp auth client id, or unauthenticated mail from address
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
803 // default hourly recipient rate limit is 30
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
804 // daily recipient rate limits are 4 times the hourly limit
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
805 // default hourly unique ip addresses is 5
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
806 // daily unique ip addresses are 4 times the hourly limit
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
807 rate_limit 30 4 5 4 { // default
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
808 fred 100 10; // override default limits
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
809 joe 10 2; // ""
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
810 "sam@somedomain.tld" 500 2;
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 276
diff changeset
811 "@otherdomain.tld" 100 2;
136
f4746d8a12a3 add smtp auth rate limits
carl
parents: 127
diff changeset
812 };
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
813 };
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 124
diff changeset
814
171
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
815 context main {
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
816 dnsbl localp partial.blackholes.five-ten-sg.com "Mail from %s rejected - local; see http://www.five-ten-sg.com/blackhole.php?%s";
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
817 dnsbl local blackholes.five-ten-sg.com "Mail from %s rejected - local; see http://www.five-ten-sg.com/blackhole.php?%s";
174
da0c41b9f672 don't whitelist addresses with embedded spaces
carl
parents: 172
diff changeset
818 dnsbl sbl zen.spamhaus.org "Mail from %s rejected - sbl; see http://www.spamhaus.org/query/bl?ip=%s";
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
819 dnsbl xbl xbl.spamhaus.org "Mail from %s rejected - xbl; see http://www.spamhaus.org/query/bl?ip=%s";
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
820 dnswl dnswl.org list.dnswl.org 2;
171
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
821 dnsbl_list local sbl;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 246
diff changeset
822 dnswl_list dnswl.org;
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
823 require_rdns yes;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
824
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
825 content on {
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
826 filter sbl-xbl.spamhaus.org "Mail containing %s rejected - sbl; see http://www.spamhaus.org/query/bl?ip=%s";
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
827 uribl multi.surbl.org "Mail containing %s rejected - surbl; see http://www.surbl.org/surbl-analysis?d=%s";
259
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
828 #uribl multi.uribl.com "Mail containing %s rejected - uribl; see http://l.uribl.com/?d=%s";
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
829 #uribl dbl.spamhaus.org "Mail containing %s rejected - dbl; see http://www.spamhaus.org/query/domain?domain=%s";
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
830 ignore { include "hosts-ignore.conf"; };
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
831 tld { include "tld.conf"; };
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
832 html_tags { include "html-tags.conf"; };
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
833 html_limit off;
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
834 host_limit soft 20;
178
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
835 spamassassin 5;
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
836 require_match yes;
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
837 dcc_greylist yes;
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
838 dcc_bulk_threshold 20;
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
839 };
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
840
216
784030ac71f1 Never whitelist self addressed mail. Changes for Fedora 10 and const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 214
diff changeset
841 generic "^dsl.static.*ttnet.net.tr$|(^|[x.-])(ppp|h|host)?([0-9]{1,3}[x.-](Red-|dynamic[x.-])?){4}"
171
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
842 "your mail server %s seems to have a generic name";
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
843
259
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
844 white_regex "=example.com=user@yourhostingaccount.com$";
233
5c3e9bf45bb5 Add whitelisting by regex expression filtering.
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
845
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
846 env_to {
171
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
847 # !! replace this with your domain names
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
848 # child contexts are not allowed to specify recipient addresses outside these domains
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
849 # if this is a backup-mx, you need to include here domains for which you relay to the primary mx
174
da0c41b9f672 don't whitelist addresses with embedded spaces
carl
parents: 172
diff changeset
850 include "/etc/mail/local-host-names";
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
851 };
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
852
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
853 context whitelist {
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
854 content off {};
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
855 env_to {
171
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
856 # dcc_to ok { include "/var/dcc/whitecommon"; };
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
857 };
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
858 env_from white {}; # white forces all unmatched from addresses (everyone in this case) to be whitelisted
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
859 # so all mail TO these env_to addresses is accepted
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
860 };
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
861
171
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
862 context abuse {
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
863 dnsbl_list xbl;
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
864 content off {};
174
da0c41b9f672 don't whitelist addresses with embedded spaces
carl
parents: 172
diff changeset
865 generic "^$ " " "; # regex cannot match, to disable generic rdns rejects
171
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
866 env_to {
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
867 abuse@ # no content filtering on abuse reports
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
868 postmaster@ # ""
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
869 };
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
870 env_from unknown {}; # ignore all parent white/black listing
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
871 };
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
872
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
873 context minimal {
171
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
874 dnsbl_list sbl;
178
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
875 content on {
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
876 spamassassin 10;
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
877 dcc_bulk_threshold many;
d6531c702be3 embedded dcc filtering
carl
parents: 176
diff changeset
878 };
171
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
879 generic "^$ " " "; # regex cannot match, to disable generic rdns rejects
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
880 env_to {
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
881 };
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
882 };
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
883
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
884 context blacklist {
255
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 253
diff changeset
885 dnsbl_list ;
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 253
diff changeset
886 dnswl_list ;
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
887 env_to {
171
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
888 # dcc_to many { include "/var/dcc/whitecommon"; };
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
889 };
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
890 env_from black {}; # black forces all unmatched from addresses (everyone in this case) to be blacklisted
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
891 # so all mail TO these env_to addresses is rejected
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
892 };
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
893
171
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
894 env_from unknown {
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
895 abuse@ abuse; # replies to abuse reports use the abuse context
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
896 # dcc_from { include "/var/dcc/whitecommon"; };
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
897 };
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
898
171
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
899 autowhite 90 "autowhite/my-auto-whitelist";
8deb51871b3d fix pre/post scripts in rpm spec file
carl
parents: 170
diff changeset
900 # install should create /etc/dnsbl/autowhite writable by userid dnsbl
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
901 };]]></literallayout>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
902 </refsect1>
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
903
111
d0dad5610980 move to autoconf/automake/docbook
carl
parents: 108
diff changeset
904 <refsect1 id='version.5'>
201
752d4315675c add reference to mercurial repository in the documentation
Carl Byington <carl@five-ten-sg.com>
parents: 187
diff changeset
905 <title>Version</title>
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
906 <para>
201
752d4315675c add reference to mercurial repository in the documentation
Carl Byington <carl@five-ten-sg.com>
parents: 187
diff changeset
907 @VERSION@
108
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
908 </para>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
909 </refsect1>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
910
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
911 </refentry>
1c7677042b78 move to autoconf/automake/docbook
carl
parents: 104
diff changeset
912 </reference>