On 2024-05-30 at 02:23:45 UTC-0400 (Thu, 30 May 2024 08:23:45 +0200)
Matus UHLAR - fantomas via Postfix-users <uh...@fantomas.sk>
is rumored to have said:

AFAIK mailman2 does this as hardcoded behaviour, if the sender's domain has DMARC policy different than "none".

No, it is configurable. Mailman v2 predates DMARC and added various options to munge From somewhere around 2.1.19 to deal with the breakage to some degree, but apparently it still has corner cases. v3 is better.

--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo@toad.social and many *@billmail.scconsult.com addresses)
Not Currently Available For Hire
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