On Fri, Sep 08, 2023 at 11:13:02PM +1000, lists--- via Postfix-users wrote:
> # grep "C92564346E5" /var/log/maillog
> Sep 8 16:41:31 geko postfix/cleanup[15407]: C92564346E5:
> message-id=<b56e4fde-f4c5-f0cb-076b-fdf4878c9...@tld.com>
> Sep 8 16:41:31 geko postfix/qmgr[1654]: C92564346E5: from=<i...@tld.com>,
> size=3262, nrcpt=1 (queue active)
> Sep 8 16:41:42 geko amavis[31308]: (31308-14) Passed CLEAN
> {RelayedInternal}, ORIGINATING LOCAL [111.222.333.444]:52547
> [111.222.333.444] <i...@tld.com> -> <m...@xyz.com>, Queue-ID: C92564346E5,
> Message-ID: <b56e4fde-f4c5-f0cb-076b-fdf4878c9...@tld.com>, mail_id:
> zj3cR-iB-usR, Hits: -3.069, size: 3681, queued_as: F22794346E8, 10889 ms
> Sep 8 16:41:42 geko postfix/smtp[15464]: C92564346E5: to=<m...@xyz.com>,
> relay=127.0.0.1[127.0.0.1]:10026, delay=16, delays=5.4/0/0.01/11,
> dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250
> 2.0.0 Ok: queued as F22794346E8)
> Sep 8 16:41:42 geko postfix/qmgr[1654]: C92564346E5: removed
Your amavis content filter has a non-trivial backlog of mail, probably
because each message takes a long time to process. Here the message sat
5.4 seconds in the incoming queue and then took 11 seconds to to deliver
to amavis. This bottleneck suggess that the amavis filter is doing
remote DNS lookups that are quite slow.
You need to review your amavis configuration and disable or tune the
actions that lead to the processing delays.
--
Viktor.
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