Hi all On Thu, Oct 16, 2025 at 06:25:00PM +0200, Michael Niedermayer via ffmpeg-devel wrote: > Hi everyone > > As we all certainly know, this ML since a few months rewrites > all "From:" headers to "X Y via ffmpeg-devel <[email protected]>" > We changed this because neither me nor timo nor rather unhelpfull AI > could fix the bounce & dmarc issue > > 33 @outlook and 19 @hotmail subscribers got deleted on october 8th > because their accounts where disabled from earlier bounces and they > did not re-enable their accounts. > > Other mailing lists from other projects seem to survive without > universal rewriting. > > Should we try to switch this list back to only rewrite the > addresses that need it ? > > mailman3 has a list where we can manually add domains which need it > > hotmail.com and outlook.com both have a DMARC policy of none > so they would not automatically fall under DMARC mitigations > and it seems noone added them to the mailman3 list > nor was outlook in the postfix list we had from mailman2 days > > Both me and timo want to try reducing the from rewriting again. > We seem to disagree a bit on if we try with the mailman3 manual > DMARC list empty first or starting with outlook and all entries from > the sender_canonical rewrite list. > > Are there any people reading this, who have some information / experiencees > they can share about mailman3 DMARC settings ? > (so we can benefit of your experience and can skip some trial and error :) > > What do people think ? > any other thing we are missing ? > > PS: we now have a DMARC setup, ARC signing and mailman3
verp_probes are now enabled, thus people should receive a mail from mailman now before having their account disabled/removed after several bounces. And only if that last mail bounces would their account be disabled/removed This is a mitigation to reduce the annoyance of bounces, not a final solution Ive also enabled that bounced messages will be sent to the list owners so I can see what exactly bounces and why. Iam not sure why this was disabled From rewriting / DMARC mitigation is still unchanged. thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Breaking DRM is a little like attempting to break through a door even though the window is wide open and the only thing in the house is a bunch of things you dont want and which you would get tomorrow for free anyway
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