Hi,
because of fighting spam i modified DMARC policy to report failing mails.
It isn't not only my system which claims wrong DKIM signatures, got
reports about same errors from 3 other systems because of DMARC report
policy.
Authentication-Results: austria136.server4you.de (amavisd-new);
dkim=fail (1024-bit key) reason="fail (message has been altered)"
header.d=sourceforge.net header.b=XZAQVe+w; dkim=fail (1024-bit key)
reason="fail (message has been altered)" header.d=sf.net
header.b=ZF/dO/0J; dkim=fail (1024-bit key)
reason="fail (body has been altered)" header.d=mail.heirich.name
header.b=Dgo6O7AQ
Of course, failing of my own DKIM signature is expected behavior.
However, the list added DKIM signatures of sf.net and sourceforge.net. And
these signatures should fit !
They should be made after the mailing-list had done modifications.
Please note, that this probably isn't a incorrect setup of my systems, because
i got DMARC reports like:
This is an authentication failure report for an email message received
from IP
216.105.38.7 on Wed, 14 Apr 2021 16:06:34 +0000 (UTC).
Feedback-Type: auth-failure
Version: 1
User-Agent: OpenDMARC-Filter/1.4.1
Auth-Failure: dmarc
Authentication-Results: prime.gushi.org; dmarc=fail
header.from=mail.heirich.name
Original-Envelope-Id: 13EG6W3R084103
Original-Mail-From: fail2ban-users-boun...@lists.sourceforge.net
Source-IP: 216.105.38.7 (lists.sourceforge.net)
Reported-Domain: mail.heirich.name
DKIM-Filter: OpenDKIM Filter v2.10.3 prime.gushi.org 13EG6W3R084103
Authentication-Results: prime.gushi.org;
dkim=fail reason="signature verification failed" (1024-bit key;
unprotected) header.d=sourceforge.net header.i=@sourceforge.net
header.b=XZAQVe+w;
dkim=fail reason="signature verification failed" (1024-bit key;
unprotected) header.d=sf.net header.i=@sf.net header.b=ZF/dO/0J;
dkim=fail reason="signature verification failed" (1024-bit key;
unprotected) header.d=mail.heirich.name header.i=@mail.heirich.name
header.b=Dgo6O7AQ
regards Peter
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