On 2023-05-16 at 21:09:35 UTC-0400 (Wed, 17 May 2023 09:09:35 +0800)
Tom Reed via Postfix-users <t...@dkinbox.com>
is rumored to have said:
[...]
Since the message was sent to mailing list which rewrites envelope
address
and adds list signature, so:
1) SPF for header From: address won't get pass due to SRS.
2) DKIM won't get pass due to list signature.
So the DMARC failed totally and the message was rejected.
How to improve this?
Do not reject mail solely based on DMARC failure.
DMARC is fragile and unreliable. It has WELL-KNOWN incompatibilities
with traditional mailing list practices. The fact that DMARC exists does
not imply that it is entirely usable as deployed.
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not Currently Available For Hire
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