Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 26 Nov 2018 19:52:59 +0700
From:      Victor Sudakov <vas@mpeks.tomsk.su>
To:        freebsd-questions@freebsd.org
Subject:   Invalid DKIM signatures in this list
Message-ID:  <20181126125259.GB86999@admin.sibptus.ru>

Next in thread | Raw E-Mail | Index | Archive | Help
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@sohara.org> and others.

-- 
Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
2:5005/49@fidonet http://vas.tomsk.ru/



Want to link to this message? Use this URL: <http://docs.FreeBSD.org/cgi/mid.cgi?20181126125259.GB86999>