Invalid DKIM signatures in this list

Victor Sudakov vas at mpeks.tomsk.su
Tue Nov 27 02:11:07 UTC 2018


RW via freebsd-questions wrote:
>On Mon, 26 Nov 2018 17:10:27 +0100 (CET)
>Trond Endrestøl wrote:
>
>> On Mon, 26 Nov 2018 19:52+0700, Victor Sudakov 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?
>>
>> 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.
>
>That's legitimate, it signs the absence of that header if it's not
>present at the time of signing.

Oh no, I'm talking about the hash of the *body* of the message.


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


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