Invalid DKIM signatures in this list
Victor Sudakov
vas at mpeks.tomsk.su
Tue Nov 27 02:06:57 UTC 2018
Trond Endrestøl wrote:
>
>> 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.
>
>Are you sure?
Absolutely. You can review this message to the list as a recent example:
http://termbin.com/rdsk
>
>When I received your message, the hash was made up using Message-ID,
>Subject, To, From, Date, and In-Reply-To. I failed to find the latter
>field.
What "latter field" are you talking about? I'm talking about the *body*
of the message being tampered with. The hash of the *body* is also
signed and present in the DKIM-Signature.
--
Victor Sudakov, VAS4-RIPE, VAS47-RIPN
2:5005/49 at fidonet http://vas.tomsk.ru/
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