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Date:      Tue, 27 Nov 2018 09:11:05 +0700
From:      Victor Sudakov <vas@mpeks.tomsk.su>
To:        RW <rwmaillists@googlemail.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Invalid DKIM signatures in this list
Message-ID:  <20181127021105.GC79319@admin.sibptus.ru>
In-Reply-To: <20181126165916.6c6bf874@gumby.homeunix.com>
References:  <20181126125259.GB86999@admin.sibptus.ru> <alpine.BSF.2.21.9999.1811261704230.90197@mail.fig.ol.no> <20181126165916.6c6bf874@gumby.homeunix.com>

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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@fidonet http://vas.tomsk.ru/



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