06.12.2020 20:27, Per Jessen пишет:
Andrei Borzenkov wrote:
Right now as you already noted mailman adds footer which always invalidates original DKIM signature.
Yup.
And SPF is fundamentally incompatible with DMARC. Still apparently messages are not bounced, right? If body is altered anyway, does it matter if you also alter header additionally?
Nope, that does not matter - invalid is invalid, it can't get any more invalid :-)
Still apparently messages are not bounced, right?
Some _are_ being quarantined, e.g. by google. See my reply further down.
You are right, I forgot that I disabled spam filtering for mailing lists. I do not see it when using local mail client, but web interface marks messages with failed DKIM signature as spam. At least Google does not reject them right away even with reject DMARC policy.