On 26 Mar 2019, at 14:47, Matus UHLAR - fantomas wrote:
if the mailing list doesn't modify existing headers, DKIM signatures are
valid but they don't align, so DMARC policy is violated.

On 26.03.19 15:40, Bill Cole wrote:
No: without modification of From, the original DKIM signature does align with From, which is good enough that DMARC can pass IF the signature is valid.

From what I know, the header From: (DKIM) is supposed to be aligned with
envelope from (SPF), which is not applicable for lists that keep header
From: but use their own envelope from.
https://en.wikipedia.org/wiki/DMARC#Mailing_lists

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Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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