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annotate ChangeLog @ 136:f4746d8a12a3

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add smtp auth rate limits
author carl
date Tue, 26 Sep 2006 13:59:14 -0700
parents f9917ce924a3
children 4028de9b46dd
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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98
91c27c00048f tokenizer errors now go thru syslog to be visible during config file reloads in normal operation
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diff changeset
1 $Id$
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2
136
f4746d8a12a3 add smtp auth rate limits
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3 5.21 2006-09-26
f4746d8a12a3 add smtp auth rate limits
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4 Add SMTP AUTH recipient rate limits, to help throttle infected
f4746d8a12a3 add smtp auth rate limits
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5 client machines and accounts with weak cracked passwords.
f4746d8a12a3 add smtp auth rate limits
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6
134
f9917ce924a3 all dns lookups fully qualified, my_read() bug fix
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7 5.20 2006-08-02
f9917ce924a3 all dns lookups fully qualified, my_read() bug fix
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8 Fully qualify all dns lookups. Fix my_read() bug. Try to convert
f9917ce924a3 all dns lookups fully qualified, my_read() bug fix
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9 names that might be ip addresses via inet_aton before doing dns
f9917ce924a3 all dns lookups fully qualified, my_read() bug fix
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10 lookups.
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11
131
df355d117199 uribl lookups fully qualified; allow two component host names
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12 5.19 2006-08-01
df355d117199 uribl lookups fully qualified; allow two component host names
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13 Bug fix - add trailing dot to uribl dns lookups to make them fully
df355d117199 uribl lookups fully qualified; allow two component host names
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14 qualified. Check host names with only two components, since
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15 spammers are now using bare http://domain.tld references.
133
b8ce1b31237d uribl lookups fully qualified; allow two component host names
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16 Spec file now creates an rpm that properly creates the dnsbl user.
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17
128
9ab51896447f don't do uribl lookups on rfc1918 address space
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18 5.18 2006-04-27
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
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19 Bug fix - newer sendmail versions don't guarantee envelope addresses
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
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20 enclosed in <> wrapper.
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21
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
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22 Document backscatter prevention configuration for systems that are
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23 used to mainly spam filter and then forward to mail to the internal
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24 server.
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25
128
9ab51896447f don't do uribl lookups on rfc1918 address space
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26 Never ask uribl blacklists about rfc1918 address space.
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27
126
05ae49d37896 don't do dnsbl lookups on rfc1918 address space
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28 5.17 2006-03-25
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
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29 Never ask dns blacklists about rfc1918 address space.
126
05ae49d37896 don't do dnsbl lookups on rfc1918 address space
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30
125
8b1562482b29 put hostname in smtp message for uribl style lookups
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31 5.16 2006-03-16
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
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32 Bug fix - the smtp error message for uribl filtering needs to
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8b1562482b29 put hostname in smtp message for uribl style lookups
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33 reference the host name, not the ip address.
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34
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ecd97e7eb1f0 properly return error code with reject reason
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35 5.15 2006-03-15
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
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36 Bug fix - we failed to properly set the return code to indicate the
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ecd97e7eb1f0 properly return error code with reject reason
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37 reason when rejecting mail for content filtering.
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38
122
e8971c595845 fix typo in multi.surbl.org name
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39 5.14 2006-03-13
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2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
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40 Fix a typo in the default config file and documentation for using
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e8971c595845 fix typo in multi.surbl.org name
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41 multi.surbl.org
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42
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aa07452e641b uribl patch from Jeff Evans <jeffe@tricab.com>
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43 5.13 2006-03-12
aa07452e641b uribl patch from Jeff Evans <jeffe@tricab.com>
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44 patch from Jeff Evans <jeffe@tricab.com>
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e2506138561b uribl patch from Jeff Evans <jeffe@tricab.com>
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45 add SURBL/URIBL lookups, remove trailing dots from hostnames,
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46 allow ip address literals as hostnames.
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47 add configuration for surbl/uribl list and reject message
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48
115
07e5d4721213 use larger resolver buffer
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49 5.12 2006-01-08
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50 Use larger resolver buffer to accomodate spammers with many name
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51 servers. A current example is life-all.com which needs to retry in
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52 tcp mode to fetch the 1444 byte response.
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53
116
0094678a16d0 update all systems from tarball, make chkconfig creates dnsbl user if needed
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54 'make chkconfig' now creates the dnsbl user if it does not exist.
0094678a16d0 update all systems from tarball, make chkconfig creates dnsbl user if needed
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55
113
a893afee4b80 move to autoconf/automake/docbook
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56 5.11 2005-12-20
a893afee4b80 move to autoconf/automake/docbook
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57 switch to autoconf/automake/docbook
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58
102
d9c64bafbf60 fix compile error on fc3
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59 5.10 2005-10-16
d9c64bafbf60 fix compile error on fc3
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60 Fix a compile error on Fedora Core 3.
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61 Discovered by Nigel Horne <njh@bandsman.co.uk>
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62
101
6ac7ba4a8312 fix <> passed as <<>> to verification hosts
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63 5.9 2005-09-26
6ac7ba4a8312 fix <> passed as <<>> to verification hosts
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64 Fix a bug with empty return paths passed to the verification code.
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65 That resulted in 'MAIL FROM:<<>>' being sent to the verification
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66 mail server.
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67
100
63e8633abc34 allow empty env_to at global context to remove all restrictions on child contexts
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68 5.8 2005-09-25
63e8633abc34 allow empty env_to at global context to remove all restrictions on child contexts
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69 Allow empty env_to at global context level to remove restrictions
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70 on env_to values in child contexts.
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71
99
f8963ddf7143 failed to return a value from parse_verify()
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72 5.7 2005-09-23
f8963ddf7143 failed to return a value from parse_verify()
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73 Failed to return a value from parse_verify() which caused failures
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74 to load the configuration.
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75
98
91c27c00048f tokenizer errors now go thru syslog to be visible during config file reloads in normal operation
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76 5.6 2005-09-22
91c27c00048f tokenizer errors now go thru syslog to be visible during config file reloads in normal operation
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77 Tokenizer errors now go thru the syslog code, so they are visible
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78 when generated during config file reloads during normal operation.
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79
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80 5.5 2005-09-21
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81 Cleanup debug logging. Verify from/to pairs now remembers the last
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82 from value sent to the remote server to prevent unnecessary rset
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83 commands.
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84
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85 5.4 2005-09-18
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86 Add verify statement to specify the smtp host to be used to verify
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87 envelope from / recipient pairs.
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88
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89 Authenticated clients are now exempt from all white/black listing
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90 in addition to the dnsbl lookups.
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91
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92 dcc_to should not look at substitute mail_host. That is only used
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93 by dcc_from.
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94
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95 5.3 2005-08-07
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96 Properly quit if the config file has syntax errors on startup. Send
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97 mail to root if the config file needs to be reloaded since it was
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98 modified, but contains syntax errors. In this case, we continue to
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99 use the old configuration.
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100
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101 5.2 2005-08-02
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102 Patch from Stephen Johnson <stephen.johnson@arkansas.gov> fixing the
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103 lack of a default return value in CONTEXT::acceptable_content().
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104
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105 5.1 2005-07-20
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106 Add multiple syslog debug levels. Detect and silently remove
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107 duplicate DNSBL definitions. That allows us to accept mail to
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108 recipients in multiple domains that use the same blacklist and yet
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109 only check that blacklist once. This may happen when your config
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110 file directly includes as child contexts the config files used on
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111 your clients mail servers.
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112
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113 5.0 2005-07-16
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114 Major changes to the syntax of the config file. Content filtering
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115 is no longer a global mail server setting.
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116
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117 4.6 2005-04-02
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118 Fix enum compilation error on Fedora Core 3.
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119 Discovered by Nigel Horne <njh@bandsman.co.uk>
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120
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121 Remove bad html tag command from the default conf file. Spammers
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122 seem to have abandoned this.
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123
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124 Add toolbar.msn.click-url.com in hosts-ignore.conf. These are all
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125 commented, but you might want to uncomment them.
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126
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127 4.5 2005-01-22
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128 Add uuencode decoding for old style attachments.
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129
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130 4.4 2005-01-18
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131 Bug fix in forked process termination that left zombies.
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132
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133 4.3 2005-01-16
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134 Only keep 20% of the resolver sockets in the ready pool.
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135
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136 4.2 2005-01-08
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137 Use the separate resolver processes even if we don't have the
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138 resolver interfaces and need gethostbyname.
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139
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140 4.1 2005-01-06
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141 Use a local unix domain socket for the resolver process
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142 communication, rather than a tcp/ip socket.
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143
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144 4.0 2005-01-03
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145 Initialize the thread mutex objects early, before they are needed
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146 by possible calls to my_syslog.
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147
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148 Fork off a separate resolver listener process, so we can do multiple
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149 dns operations in parallel. For each simultaneous inbound email,
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150 we have a separate sendmail process, a milter thread, and a dns
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151 resolver process.
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152
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153 3.7 2004-10-28
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154 Added an 'ignore' command to the conf file, used to ignore some
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155 hosts that might end up on the SBL and otherwise trip the content
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156 scanning filter. In particular, many recent Microsoft Word
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157 documents contain the string www.5iantlavalamp.com which is
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158 associated with their smart tags stuff. That is currently hosted at
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159 216.168.224.70, which is shared with a site that ended up on the
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160 SBL.
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161
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162 3.6 2004-09-08
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163 Contributions from Dan Harkless <software@harkless.org>
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164 Better documentation for disabling the content filtering.
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165 Don't bother looking at the body text if we are not doing
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166 content filtering.
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167
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168 3.5 2004-07-17
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169 Extend the error message for content filtering when the NS record
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170 points to an ip address on the SBL. Include the original host name
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171 that referenced that NS name.
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172
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173
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174 3.4 2004-07-15
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175 Tokens with two consecutive periods cannot be ip addresses or host
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176 names.
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177
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178 Updated dnsbl.spec file for building rpms from John Gunkel.
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179
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180
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181 3.3 2004-07-09
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182 Drop root priviledges properly, including the group id.
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183
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184
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185 3.2 2004-07-09
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186
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187 Contributions from John Gunkel <jgunkel@palliser.ca>:
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188 Add .spec file for building rpms, contributed by John Gunkel
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189
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190 Changes to file layout to conform to RedHat/LSB standards.
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191
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192 Add some html (actually xml) tags used by Apple mac print
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193 subsystem that were tripping the html tag detector.
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194
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195 Help with changes required to allow dnsbl to drop root
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196 priviledges. Move the socket to /var/run/dnsbl/dnsbl.sock
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197
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198 Change parser to handle &#xnnn; obfuscated urls with charaters
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199 specified in hex.
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200
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201 Make bad_html tags more sensitive to binary tags, to reduce false
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202 positives in .zip or .tar.gz file attachments.
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203
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204 Add sendmail queueid to the dnsbl syslog messages.
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205
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206 Fix one place where host names were not forced to lower case.
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207 Discovered by Nigel Horne <njh@bandsman.co.uk>
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208
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209 Remove duplicate dns queries within the same smtp transaction from
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210 the body content filtering. This helps if the mail server does not
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211 have a nearby caching dns server.
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212
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213 Add host_soft_limit config keyword. Use only one of host_limit or
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214 host_soft_limit, since the last one wins. The host_limit is a hard
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215 upper limit on the number of host names in a message. The
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216 host_soft_limit allows unlimited host names, but only checks a
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217 random sample of them against the dnsbl.
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218
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219 The main thread has dropped root priviledges, but other threads
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220 are still running as root. This needs to be fixed.