[Rspamd-Users] dkim and from fileds

[Huber, Peter]

Ok,
it seems the problem is quite different, here the output of a testmail (http://www.appmaildev.com/de/dkim).

Report-Id: 4b7e1e4d
Sender: <peter.huber at uni-wh.de>
Header-From: <BIT-Serveradmin at uni-wh.de>
HELO-Domain: dnsmail2.uni-wh.de
Source-IP: 193.175.243.82
Validator-Version: 1.08

The "sender" is me but the "header-from" from is signed:

DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=uni-wh.de; s=20170713;
t=1550658554; h=from:from:sender:sender:reply-to:subject:subject:date:date:
 message-id:message-id:to:to:cc:mime-version:mime-version:
 content-type:content-type:content-transfer-encoding:in-reply-to:
 references; bh=ljdnbuskQXIZ6oPdj4UMUYzpipt7LV5rkuakTndmiDs=;
b=GVQ9ToTegKVU+ZEX9rTTJ3zcKPxVXWfjEMqU8rRMQs+JGMeWPLCS2kE9DQ4XEgEkbqDgwo
6LCip4Pe2pATkWUi2uNq5ExNdI1NCrA4eV8+fnCnruXQGrn5xPby0tU+D83pmU5xF4h07Q
ihfL1awlqO58OvC5opT23bwzH3eX7P5XN8knmS/T7biLcatUlBz6dnatD8IKH/0I6G3IZX
/E5HA7Cydz2EuaHqrcTWIZQOjlKXaTpYdDmVt5nKrHu+9qbDtfo7pmTFtXWyjoAI3DdZOP
8pJ+9jCWBXvA3y2MXQGoQJyiSEv/d1gAY+2cJXrZ7XMNGBvc6+y0yavrfD0Pqg==
Signed-by: BIT-Serveradmin at uni-wh.de
Expected-Body-Hash: ljdnbuskQXIZ6oPdj4UMUYzpipt7LV5rkuakTndmiDs=
Public-Key: v=DKIM1; k=rsa;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvmUtqkZAdVaj4coqe7WPZN8/XtjbVa07l7Y2biravGMhYB1ANxX3rYfStCdhiZUVvxYFo8q9uo6EepUf0eW9A5TnEqmZnpx2wEFUT/m2SArZjMeBCWoCN6FNr7q7+7+Km7m2yjM9fRSZwhrgKl3ddVUnx77ShE9zA7fL20/+LFb5JbhiR7gEa8iK+JJFC/BLqHtlV4ghquZ29OkLt6gt3/m7wpB1ufzkx9ptdH2JMTV7hTFwgzLGgJPwzkQOGFDRqi46VEF9kpc8CCIPyPjkwQoeaUZRewUIMQL//AnLlm/wXJVM4/fdf1B915d0YGkPIKY6YGGquPN0gERjbyScwQIDAQAB;
DKIM-Result: fail (bad signature)

I think this is the problem, not multiple from header fields in the mail.
Is there any way to fix this?

Kind Regards,

Peter


-----Ursprüngliche Nachricht-----
Von: Users <users-bounces at lists.rspamd.com> Im Auftrag von Alexander Moisseev via Users
Gesendet: Mittwoch, 20. Februar 2019 10:43
An: users at lists.rspamd.com
Cc: Alexander Moisseev <moiseev at mezonplus.ru>
Betreff: Re: [Rspamd-Users] dkim and from fileds

On 20.02.19 12:08, Huber, Peter wrote:
> I found no solution to the following problem we have:
> Some mails from our Microsoft Exchange have two from addresses. This happens eg. when you mal a calendar invitation in behalf of...
> Rspamd signs this mail with a dkim signature, but only one of these from fields. How can I change this, so that both from fields were signed by rspamd?

Multiple "from" header fields is a violation of RFC (see RFC 2822 section 3.6) and should be fixed in Exchange.
The "from" header should occur exactly one time in a message.
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