On 19 May 2025, at 11:02, Benny Kjær Nielsen wrote: > On 19 May 2025, at 10:52, Sebastian Hagedorn wrote: > > As someone who runs a large Mailman server as my day job: Benny has to use > Mailman’s DMARC handling. > > I already do that, but it's possible this issue is related. The error > messages were about DKIM failing.
OK, in that case I guess the DNS lookup failed. I’ve seen that happen in the
past. When Mailman can’t lookup the DMARC policy, the DMARC handling doesn’t
happen, leading to this issue.
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