On Sun, 29 Jul 2018 19:00:56 +0100 Dominic Raferd wrote: > On Sun, 29 Jul 2018 at 18:33, RW <rwmailli...@googlemail.com> wrote: > > > On Sun, 29 Jul 2018 12:28:08 +0200 > > Antony Stone wrote: > > > > > On Sunday 29 July 2018 at 12:17:07, Sebastian Arcus wrote yet > > > another email that's guaranteed to fail DMARC with a reject when > > > posted through a mailing list, and consequently I didn't > > > receive: > > ... > > > > Ditto, and I haven't received (and won't receive) any of his > subsequent postings either (opendmarc is - quite rightly - blocking > them). More strangely, I didn't receive this message (above) except > apparently when quoted in reply by RW. Note to OP: when posting to > mailing lists, use a domain that does not have DMARC with p=reject > (and preferably not p=quarantine either).
Actually it's worse than that, the main problem (the last I looked) is that his DKIM signs some List-* headers which guarantees a DKIM fail when he posts through a mailing list.