etc/rules/postfix_rules.xml

   1 <!-- @(#) $Id: ./etc/rules/postfix_rules.xml, 2011/09/08 dcid Exp $
   2
   3   -  Official postfix rules for OSSEC.
   4   -  Author: Ahmet Ozturk
   5   -  Author: Daniel B. Cid
   6   -  License: http://www.ossec.net/en/licensing.html
   7   -->
   8
   9 <var name="POSTFIX_FREQ">6</var>
  10
  11 <group name="syslog,postfix,">
  12   <rule id="3300" level="0">
  13     <decoded_as>postfix-reject</decoded_as>
  14     <description>Grouping of the postfix reject rules.</description>
  15   </rule>
  16
  17   <rule id="3301" level="6">
  18     <if_sid>3300</if_sid>
  19     <id>^554$</id>
  20     <description>Attempt to use mail server as relay </description>
  21     <description>(client host rejected).</description>
  22     <group>spam,</group>
  23   </rule>
  24
  25   <rule id="3302" level="6">
  26     <if_sid>3300</if_sid>
  27     <id>^550$</id>
  28     <description>Rejected by access list </description>
  29     <description>(Requested action not taken).</description>
  30     <group>spam,</group>
  31   </rule>
  32
  33   <rule id="3303" level="5">
  34     <if_sid>3300</if_sid>
  35     <id>^450$</id>
  36     <description>Sender domain is not found </description>
  37     <description>(450: Requested mail action not taken).</description>
  38     <group>spam,</group>
  39   </rule>
  40
  41   <rule id="3304" level="5">
  42     <if_sid>3300</if_sid>
  43     <id>^503$</id>
  44     <description>Improper use of SMTP command pipelining </description>
  45     <description>(503: Bad sequence of commands).</description>
  46     <group>spam,</group>
  47   </rule>
  48
  49   <rule id="3305" level="5">
  50     <if_sid>3300</if_sid>
  51     <id>^504$</id>
  52     <description>Receipent address must contain FQDN </description>
  53     <description>(504: Command parameter not implemented).</description>
  54     <group>spam,</group>
  55   </rule>
  56
  57   <rule id="3306" level="6">
  58     <if_sid>3301, 3302</if_sid>
  59     <match> blocked using </match>
  60     <description>IP Address black-listed by anti-spam (blocked).</description>
  61     <group>spam,</group>
  62   </rule>
  63
  64   <rule id="3320" level="0">
  65     <decoded_as>postfix</decoded_as>
  66     <description>Grouping of the postfix rules.</description>
  67   </rule>
  68
  69   <rule id="3330" level="10" ignore="240">
  70     <if_sid>3320</if_sid>
  71     <match>defer service failure|Resource temporarily unavailable|</match>
  72     <match>^fatal: the Postfix mail system is not running</match>
  73     <description>Postfix process error.</description>
  74     <group>service_availability,</group>
  75   </rule>
  76
  77   <rule id="3332" level="5">
  78     <if_sid>3320</if_sid>
  79     <match> authentication failed</match>
  80     <description>Postfix SASL authentication failure.</description>
  81     <group>authentication_failed,</group>
  82   </rule>
  83
  84   <rule id="3331" level="10" ignore="120">
  85     <if_sid>3300</if_sid>
  86     <id>^452</id>
  87     <description>Postfix insufficient disk space error.</description>
  88     <group>service_availability,</group>
  89   </rule>
  90
  91   <rule id="3334" level="3">
  92     <if_sid>3320</if_sid>
  93     <match>^daemon started </match>
  94     <description>Postfix started.</description>
  95   </rule>
  96
  97   <rule id="3333" level="7">
  98     <if_sid>3320</if_sid>
  99     <match>^terminating on signal</match>
 100     <description>Postfix stopped.</description>
 101     <group>service_availability,</group>
 102   </rule>
 103
 104   <rule id="3351" level="6" frequency="$POSTFIX_FREQ" timeframe="90">
 105     <if_matched_sid>3301</if_matched_sid>
 106     <same_source_ip />
 107     <description>Multiple relaying attempts of spam.</description>
 108     <group>multiple_spam,</group>
 109   </rule>
 110
 111   <rule id="3352" level="6" frequency="$POSTFIX_FREQ" timeframe="120">
 112     <if_matched_sid>3302</if_matched_sid>
 113     <same_source_ip />
 114     <description>Multiple attempts to send e-mail from a </description>
 115     <description>rejected sender IP (access).</description>
 116     <group>multiple_spam,</group>
 117   </rule>
 118
 119   <rule id="3353" level="10" frequency="$POSTFIX_FREQ" timeframe="120">
 120     <if_matched_sid>3303</if_matched_sid>
 121     <same_source_ip />
 122     <description>Multiple attempts to send e-mail from </description>
 123     <description>invalid/unknown sender domain.</description>
 124     <group>multiple_spam,</group>
 125   </rule>
 126
 127   <rule id="3354" level="12" frequency="$POSTFIX_FREQ" timeframe="120">
 128     <if_matched_sid>3304</if_matched_sid>
 129     <same_source_ip />
 130     <description>Multiple misuse of SMTP service </description>
 131     <description>(bad sequence of commands).</description>
 132     <group>multiple_spam,</group>
 133   </rule>
 134
 135   <rule id="3355" level="10" frequency="$POSTFIX_FREQ" timeframe="120">
 136     <if_matched_sid>3305</if_matched_sid>
 137     <same_source_ip />
 138     <description>Multiple attempts to send e-mail to </description>
 139     <description>invalid recipient or from unknown sender domain.</description>
 140     <group>multiple_spam,</group>
 141   </rule>
 142
 143   <rule id="3356" level="10" frequency="$POSTFIX_FREQ" timeframe="120" ignore="30">
 144     <if_matched_sid>3306</if_matched_sid>
 145     <same_source_ip />
 146     <description>Multiple attempts to send e-mail from </description>
 147     <description>black-listed IP address (blocked).</description>
 148     <group>multiple_spam,</group>
 149   </rule>
 150
 151   <rule id="3357" level="10" frequency="6" timeframe="120" ignore="60">
 152     <if_matched_sid>3332</if_matched_sid>
 153     <same_source_ip />
 154     <description>Multiple SASL authentication failures.</description>
 155     <group>authentication_failures,</group>
 156   </rule>
 157
 158   <rule id="3390" level="0">
 159     <match>^clamsmtpd: </match>
 160     <description>Grouping of the clamsmtpd rules.</description>
 161   </rule>
 162 </group> <!-- SYSLOG,POSTFIX -->