On Sat, Oct 25, 2025 at 7:49 PM monodev <[email protected]> wrote: > > On 10/25/25 9:28 PM, Marco Moock wrote: > > If a mailing list doesn't rewrite the MAIL FROM, SPF will fail and > > bounces (IIRC if subscribers have full inbox, deleted addresses etc.) > > will go to the original sender of the message. > > This mailing list does rewrite the envelope from, but the DMARC reports > I receive after posting here -- from providers both big (gmail, outlook, > hotmail) and small -- still universally report SPF failures. > > I did not receive such reports after posting on postfix-users, but mail > from that mailing list breaks DKIM due to the list rewriting the message > from. They do use ARC though which I'm not familiar with, so the fault > in that case is probably with my setup being out of date with best > practices.
Maybe related, see the expired Internet-Draft (I-D), "Tolerating Mailing-List Modifications", <https://datatracker.ietf.org/doc/draft-chuang-mailing-list-modifications/>. > Out of curiosity, your mail does not seem to contain a DKIM signature, > how's your deliverability? Jeff
