Marvin Renich via Postfix-users: > * Wietse Venema via Postfix-users <postfix-users@postfix.org> [241018 10:51]: > > The From/Reply-To munging are the result of standard Mailman > > workarounds for DMARC (i.e. to satisfy DKIM and SPF). > > "From:", yes (for SPF, not DKIM I believe). But I don't think Reply-To > affects SPF at all, and only DKIM if the Reply-To header is signed, in > which case it is signed by mailman after Reply-To munging. Please don't > modify an explicit Reply-To set by the sender.
Postfix lists are run by Mailman3, configured to replace the From: addres with the list address; Mailman3 then unconditionally adds the original From: addres to Reply-to:. This is standard Mailman damage control for DMARC. https://docs.mailman3.org/projects/mailman/en/latest/src/mailman/handlers/docs/dmarc-mitigations.html Wietse _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
