Invalid DKIM signatures in this list
Victor Sudakov
vas at mpeks.tomsk.su
Mon Nov 26 12:53:12 UTC 2018
Dear Colleagues,
I have noticed that the Mailman which manages this list keeps the
sender's "DKIM-Signature:" header intact but modifies the body of the
message by adding a footer.
This behavior invalidates the sender's digital signature with
"dkim=fail (body hash mismatch; body probably modified in transit)".
I think, according to the common sense and RFC6377, the Mailman should
either remove the "DKIM-Signature:" when modifying the body, or
refrain from modifying the body, or add its own valid "DKIM-Signature:"
from scratch. What is currently happening does not make sense.
Whom do I contact about it?
An example of this behaviour can be seen in the message with
Message-Id: <20181126081310.026376ddcaad286971909626 at sohara.org> and others.
--
Victor Sudakov, VAS4-RIPE, VAS47-RIPN
2:5005/49 at fidonet http://vas.tomsk.ru/
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