On Sun 06/Jul/2025 13:22:49 +0200 Douglas Foster wrote:
Failure Reporting has two potential purposes:
* Detect abuse, in the hope that the abuser can be taken down by some method.
* Detect configuration errors at origination, that the domain owner can
alter, so that future messages originate with dual authentication.
Failure reports on mailing list messages do not facilitate either of these
goals, so they are noise. Noise creates multiple problems[...]
100% agreed! Unfortunately, one cannot blindly trust List-Id: or similar
headers. The only way would be to keep track of ML subscriptions and of any
other forwarding setup that may produce cases known to violate DMARC.
Best
Ale
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