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annotate ChangeLog @ 140:4028de9b46dd

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cleanup smtp rate limit code
author carl
date Wed, 27 Sep 2006 08:00:13 -0700
parents f4746d8a12a3
children ecb40aa3eaa5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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91c27c00048f tokenizer errors now go thru syslog to be visible during config file reloads in normal operation
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1 $Id$
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2
140
4028de9b46dd cleanup smtp rate limit code
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3 5.22 2006-09-27
4028de9b46dd cleanup smtp rate limit code
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4 Change syntax for default rate limit. Improve hourly reset of
4028de9b46dd cleanup smtp rate limit code
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5 limits. Warning for rate limits in non default contexts to allow
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6 nesting of client configurations.
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7
136
f4746d8a12a3 add smtp auth rate limits
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8 5.21 2006-09-26
f4746d8a12a3 add smtp auth rate limits
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9 Add SMTP AUTH recipient rate limits, to help throttle infected
f4746d8a12a3 add smtp auth rate limits
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10 client machines and accounts with weak cracked passwords.
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11
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f9917ce924a3 all dns lookups fully qualified, my_read() bug fix
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12 5.20 2006-08-02
f9917ce924a3 all dns lookups fully qualified, my_read() bug fix
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13 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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14 names that might be ip addresses via inet_aton before doing dns
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15 lookups.
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16
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df355d117199 uribl lookups fully qualified; allow two component host names
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17 5.19 2006-08-01
df355d117199 uribl lookups fully qualified; allow two component host names
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18 Bug fix - add trailing dot to uribl dns lookups to make them fully
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19 qualified. Check host names with only two components, since
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20 spammers are now using bare http://domain.tld references.
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b8ce1b31237d uribl lookups fully qualified; allow two component host names
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21 Spec file now creates an rpm that properly creates the dnsbl user.
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22
128
9ab51896447f don't do uribl lookups on rfc1918 address space
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23 5.18 2006-04-27
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2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
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24 Bug fix - newer sendmail versions don't guarantee envelope addresses
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
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25 enclosed in <> wrapper.
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26
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
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27 Document backscatter prevention configuration for systems that are
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28 used to mainly spam filter and then forward to mail to the internal
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29 server.
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30
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9ab51896447f don't do uribl lookups on rfc1918 address space
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31 Never ask uribl blacklists about rfc1918 address space.
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32
126
05ae49d37896 don't do dnsbl lookups on rfc1918 address space
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33 5.17 2006-03-25
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
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34 Never ask dns blacklists about rfc1918 address space.
126
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35
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8b1562482b29 put hostname in smtp message for uribl style lookups
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36 5.16 2006-03-16
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
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37 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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38 reference the host name, not the ip address.
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39
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ecd97e7eb1f0 properly return error code with reject reason
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40 5.15 2006-03-15
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2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
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41 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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42 reason when rejecting mail for content filtering.
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43
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e8971c595845 fix typo in multi.surbl.org name
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44 5.14 2006-03-13
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45 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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46 multi.surbl.org
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47
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aa07452e641b uribl patch from Jeff Evans <jeffe@tricab.com>
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48 5.13 2006-03-12
aa07452e641b uribl patch from Jeff Evans <jeffe@tricab.com>
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49 patch from Jeff Evans <jeffe@tricab.com>
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e2506138561b uribl patch from Jeff Evans <jeffe@tricab.com>
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50 add SURBL/URIBL lookups, remove trailing dots from hostnames,
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51 allow ip address literals as hostnames.
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52 add configuration for surbl/uribl list and reject message
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53
115
07e5d4721213 use larger resolver buffer
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54 5.12 2006-01-08
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55 Use larger resolver buffer to accomodate spammers with many name
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56 servers. A current example is life-all.com which needs to retry in
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57 tcp mode to fetch the 1444 byte response.
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58
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0094678a16d0 update all systems from tarball, make chkconfig creates dnsbl user if needed
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59 'make chkconfig' now creates the dnsbl user if it does not exist.
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60
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a893afee4b80 move to autoconf/automake/docbook
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61 5.11 2005-12-20
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62 switch to autoconf/automake/docbook
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63
102
d9c64bafbf60 fix compile error on fc3
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64 5.10 2005-10-16
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65 Fix a compile error on Fedora Core 3.
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66 Discovered by Nigel Horne <njh@bandsman.co.uk>
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67
101
6ac7ba4a8312 fix <> passed as <<>> to verification hosts
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68 5.9 2005-09-26
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69 Fix a bug with empty return paths passed to the verification code.
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70 That resulted in 'MAIL FROM:<<>>' being sent to the verification
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71 mail server.
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72
100
63e8633abc34 allow empty env_to at global context to remove all restrictions on child contexts
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73 5.8 2005-09-25
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74 Allow empty env_to at global context level to remove restrictions
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75 on env_to values in child contexts.
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76
99
f8963ddf7143 failed to return a value from parse_verify()
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77 5.7 2005-09-23
f8963ddf7143 failed to return a value from parse_verify()
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78 Failed to return a value from parse_verify() which caused failures
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79 to load the configuration.
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80
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81 5.6 2005-09-22
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82 Tokenizer errors now go thru the syslog code, so they are visible
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83 when generated during config file reloads during normal operation.
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84
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85 5.5 2005-09-21
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86 Cleanup debug logging. Verify from/to pairs now remembers the last
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87 from value sent to the remote server to prevent unnecessary rset
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88 commands.
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89
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90 5.4 2005-09-18
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91 Add verify statement to specify the smtp host to be used to verify
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92 envelope from / recipient pairs.
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93
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94 Authenticated clients are now exempt from all white/black listing
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95 in addition to the dnsbl lookups.
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96
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97 dcc_to should not look at substitute mail_host. That is only used
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98 by dcc_from.
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99
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100 5.3 2005-08-07
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101 Properly quit if the config file has syntax errors on startup. Send
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102 mail to root if the config file needs to be reloaded since it was
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103 modified, but contains syntax errors. In this case, we continue to
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104 use the old configuration.
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105
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106 5.2 2005-08-02
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107 Patch from Stephen Johnson <stephen.johnson@arkansas.gov> fixing the
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108 lack of a default return value in CONTEXT::acceptable_content().
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109
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110 5.1 2005-07-20
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111 Add multiple syslog debug levels. Detect and silently remove
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112 duplicate DNSBL definitions. That allows us to accept mail to
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113 recipients in multiple domains that use the same blacklist and yet
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114 only check that blacklist once. This may happen when your config
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115 file directly includes as child contexts the config files used on
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116 your clients mail servers.
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117
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118 5.0 2005-07-16
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119 Major changes to the syntax of the config file. Content filtering
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120 is no longer a global mail server setting.
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121
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122 4.6 2005-04-02
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123 Fix enum compilation error on Fedora Core 3.
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124 Discovered by Nigel Horne <njh@bandsman.co.uk>
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125
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126 Remove bad html tag command from the default conf file. Spammers
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127 seem to have abandoned this.
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128
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129 Add toolbar.msn.click-url.com in hosts-ignore.conf. These are all
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130 commented, but you might want to uncomment them.
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131
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132 4.5 2005-01-22
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133 Add uuencode decoding for old style attachments.
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134
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135 4.4 2005-01-18
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136 Bug fix in forked process termination that left zombies.
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137
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138 4.3 2005-01-16
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139 Only keep 20% of the resolver sockets in the ready pool.
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140
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141 4.2 2005-01-08
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142 Use the separate resolver processes even if we don't have the
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143 resolver interfaces and need gethostbyname.
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144
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145 4.1 2005-01-06
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146 Use a local unix domain socket for the resolver process
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147 communication, rather than a tcp/ip socket.
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148
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149 4.0 2005-01-03
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150 Initialize the thread mutex objects early, before they are needed
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151 by possible calls to my_syslog.
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152
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153 Fork off a separate resolver listener process, so we can do multiple
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154 dns operations in parallel. For each simultaneous inbound email,
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155 we have a separate sendmail process, a milter thread, and a dns
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156 resolver process.
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157
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158 3.7 2004-10-28
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159 Added an 'ignore' command to the conf file, used to ignore some
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160 hosts that might end up on the SBL and otherwise trip the content
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161 scanning filter. In particular, many recent Microsoft Word
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162 documents contain the string www.5iantlavalamp.com which is
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163 associated with their smart tags stuff. That is currently hosted at
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164 216.168.224.70, which is shared with a site that ended up on the
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165 SBL.
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166
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167 3.6 2004-09-08
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168 Contributions from Dan Harkless <software@harkless.org>
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169 Better documentation for disabling the content filtering.
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170 Don't bother looking at the body text if we are not doing
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171 content filtering.
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172
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173 3.5 2004-07-17
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174 Extend the error message for content filtering when the NS record
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175 points to an ip address on the SBL. Include the original host name
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176 that referenced that NS name.
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177
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178
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179 3.4 2004-07-15
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180 Tokens with two consecutive periods cannot be ip addresses or host
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181 names.
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182
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183 Updated dnsbl.spec file for building rpms from John Gunkel.
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184
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185
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186 3.3 2004-07-09
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187 Drop root priviledges properly, including the group id.
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188
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189
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190 3.2 2004-07-09
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191
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192 Contributions from John Gunkel <jgunkel@palliser.ca>:
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193 Add .spec file for building rpms, contributed by John Gunkel
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194
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195 Changes to file layout to conform to RedHat/LSB standards.
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196
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197 Add some html (actually xml) tags used by Apple mac print
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198 subsystem that were tripping the html tag detector.
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199
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200 Help with changes required to allow dnsbl to drop root
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201 priviledges. Move the socket to /var/run/dnsbl/dnsbl.sock
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202
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203 Change parser to handle &#xnnn; obfuscated urls with charaters
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204 specified in hex.
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205
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206 Make bad_html tags more sensitive to binary tags, to reduce false
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207 positives in .zip or .tar.gz file attachments.
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208
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209 Add sendmail queueid to the dnsbl syslog messages.
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210
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211 Fix one place where host names were not forced to lower case.
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212 Discovered by Nigel Horne <njh@bandsman.co.uk>
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213
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214 Remove duplicate dns queries within the same smtp transaction from
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215 the body content filtering. This helps if the mail server does not
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216 have a nearby caching dns server.
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217
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218 Add host_soft_limit config keyword. Use only one of host_limit or
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219 host_soft_limit, since the last one wins. The host_limit is a hard
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220 upper limit on the number of host names in a message. The
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221 host_soft_limit allows unlimited host names, but only checks a
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222 random sample of them against the dnsbl.
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223
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224 The main thread has dropped root priviledges, but other threads
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225 are still running as root. This needs to be fixed.