On Wed, Aug 24, 2022 at 08:15:21PM +0200, Jan Eden wrote:
I was under the impression that earlier issues with DMARC, DKIM and SPF with respect to mailing lists were solvable (cf. https://begriffs.com/posts/2018-09-18-dmarc-mailing-list.html), but this does not seem to be the case. Is there anything I can do myself to avoid such problems? My DMARC setup works fine for messages sent directly to recipients at Gmail, Yahoo, Comcast etc.
I think OSUOSL implemented a DKIM filter some time in June, probably due to lots of bounce-unsubscribe issues with other mailing customers. However, this is probably causing your DMARC policy to fail, since the signature is missing (or renamed).
The Mutt lists already munge the From header for p=reject emails. I haven't enabled it for p=quarantine, but this is a Mailman option I can control.
Does anyone have feedback before I enable that? -- Kevin J. McCarthy GPG Fingerprint: 8975 A9B3 3AA3 7910 385C 5308 ADEF 7684 8031 6BDA
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