Sender address triggers FILTER smtp-amavis

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What does "Sender address triggers FILTER smtp-amavis:[127.0.0.1]:10026" mean?


Problem

What does "Sender address triggers FILTER smtp-amavis:[127.0.0.1]:10026" mean? Is it harmless?


Solution

The message 'Sender address triggers FILTER smtp-amavis:[127.0.0.1]:10026' is completely harmless and expected.

A typical log line containing this message looks like :

NOQUEUE: filter: RCPT from external.domain.com[x.x.x.x]: <user@domain.com>: Sender address triggers FILTER smtp-amavis:[127.0.0.1]:10026; from=<user@domain.com> to=<user@example.com> proto=ESMTP helo=<[x.x.x.x]>

A breakdown of the log line :

(Note that this line is logged even before the complete message has been transmitted.)

NOQUEUE: Postfix hasn't assigned a queue-id to this message as of yet.  
RCPT from external.domain.com: The recipient domain's IP. Note the 'RCPT' -> This log line comes up immediately after RCPT, and before DATA.
Sender address triggers FILTER smtp-amavis:[127.0.0.1]:10026: This email will be filtered through amavis. By default all sender addresses will be triggered.
proto=ESMTP: ESMTP will be used
helo=<[x.x.x.x]>: The "helo" was sent from the specified IP.


This external link contains more information about formatting.

Submitted by: Shashank Tewari
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