On 2023-04-28 at 10:58:52 UTC-0400 (Fri, 28 Apr 2023 10:58:52 -0400)
Joey J <jacklistm...@gmail.com>
is rumored to have said:

Hello All,

I'm trying to understand why SA keeps scoring this rule, when the sender
only has their from address, no reply to etc, nothing helping me to
understand why.

I'm guessing here, but this would be where the reply to differs from the
from?

FROM_RETURNPATH_MISMATCH is not in the current ruleset from the default rule channel nor is it in the widely-used KAM ruleset (maintained by a PMC-member, but not part of the SA Project proper.)

Hence, that rule is part of your local customization of SpamAssassin.

Any assistance appreciated.

Well, my ***GUESS*** based on the name is that a rule called FROM_RETURNPATH_MISMATCH would be when the SMTP envelope sender (RFC5321.MailFrom, in RFC 5598 terminology, often preserved in a Return-Path header during delivery) and the message header From address (RFC5322.From) which are not intrinsically identical but usually are in person-to-person email.

The *actual* definition of that rule will be somewhere in your SA config, most likely in /etc/mail/spamassassin/local.cf

--
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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