Re: Mailman lists (reply-to) break OpenDKIM signatures

From: Patrick Ben Koetter <p_at_sys4.de>
Date: Mon, 14 Jan 2013 15:08:35 +0100

* Benoit Panizzon <panizzon_at_woody.ch>:
> Hello out there
>
> I noticed that the DKIM verification fails if an email is forwarded via a
> Mailman Mailinglist.
>
> I suppose the problem is, that we have configured most of the mailinglists to
> add a reply-to header to have repliest sent to the list and reply-to is a
> header that was signed in the original email.

MLMs like Mailman modify the Subject:-Header AND add text to the footer by
default. Both behaviours break the DKIM signature.

p_at_rick

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Received on Mon Jan 14 2013 - 14:08:46 PST

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