(client host rejected).

Description

(client host rejected).

Fires when

Wazuh evaluates a chain top-down. Every rule above this one must match on the same event before this rule is tested at all.

  1. 3300 Grouping of the postfix reject rules. anchor level 0
    decoded_as=postfix-reject
  2. 3301 (client host rejected). anchor level 6 this rule
    Matches no fields of its own.

Refined by

1 rule chains off this one, narrowing it further.

Rule dependencies

Depends on

Rule logic

Matches no fields of its own — an anchor that 1 rule refines. Deploying it alone raises nothing.

Source file
Raw source (client host rejected). · Wazuh XML
Esc
Published by Wazuh Core Ruleset ↗, licensed under GPLv2 ↗. Reproduced here unmodified. 
<rule id="3301" level="6">
    <if_sid>3300</if_sid>
    <id>^554$</id>
    <description>Postfix: Attempt to use mail server as relay </description>
    <description>(client host rejected).</description>
    <mitre>
      <id>T1114</id>
    </mitre>
    <group>spam,pci_dss_10.6.1,pci_dss_11.4,gdpr_IV_35.7.d,hipaa_164.312.b,nist_800_53_AU.6,nist_800_53_SI.4,tsc_CC7.2,tsc_CC7.3,tsc_CC6.1,tsc_CC6.8,</group>
  </rule>

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