This happened again yesterday.
> On Feb 25, 2019, at 13:53, Rainer Müller wrote: > > Hello, > > if you are using Gmail or a Google hosted mail service for your domain, > your subscription to the macports-changes mailing list was likely > disabled on 2019-02-22 by mailman due to "excessive or fatal bounces". > > If you still want to receive the mailing list, but are currently not > getting the emails, you have to take manual action. Please follow the > link below to the mailman options. After logging in, check that the > option "Mail delivery" is Enabled for your account. > > https://lists.macports.org/mailman/options/macports-changes > > > The technical cause of this was an email being rejected by Google due to > a strict DMARC policy for the From address. The way Google handled this > was correct as this mail was in fact not originating from a source > whitelisted by the domain owner of the From address. > > Although we configured all our lists on mailman exactly for this reason > with dmarc_moderation_action="Munge From" [1], we now discovered that > this setting is an action that only applies to mails going through the > moderation queue. However, as posting to macports-changes is meant to be > restricted, legitimate mails are pre-approved. As we have learned now, > skipping the moderation unfortunately also skips the DMARC munging that > was supposed to prevent such bounces. > > In order to prevent this from happening again, I would like to no longer > sent mails with the author's address as From, but use a generic From > address and merely the author to CC. Unless someone else comes up with a > better idea, I will look into applying this in the next days. > > Rainer > > [1] https://www.gnu.org/software/mailman/mailman-admin/sender-filters.html
