I realize I'm a bit late to this party, but this is a technique that I don't think has been addressed here. On my lists I've fixed the DMARC bounces by rewriting From: lines of DMARC'ed domains like this on the way out:
From: Marissa <mme...@yahoo.com> to From: Marissa <mme...@yahoo.com.invalid> Before you tell me I'm nuts, hear me out. I've actually implemented this, and it works. Advantages: * Really fixes DMARC problems * Everyone can still post to lists * Doesn't change the way users in non-DMARC'ed domains work * Leaves the author's address in the headers, so you can reply and use MUA sorting rules, give or take usenet-style unmunging. (This is a reason we dislike putting the list address in the From: line.) * Code is simple * Gives people a hint of where the actual problem lies R's, John PS: I use .invalid because RFC 6761 promises it will never be allocated to anyone. _______________________________________________ Mailman-Developers mailing list Mailman-Developers@python.org https://mail.python.org/mailman/listinfo/mailman-developers Mailman FAQ: http://wiki.list.org/x/AgA3 Searchable Archives: http://www.mail-archive.com/mailman-developers%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-developers/archive%40jab.org Security Policy: http://wiki.list.org/x/QIA9
