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Re: [dmarc-ietf] auth-res vs. dmarc

Alessandro Vesely <vesely@tana.it> Wed, 30 December 2020 08:58 UTC

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From: Alessandro Vesely <vesely@tana.it>
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Date: Wed, 30 Dec 2020 09:57:57 +0100
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Subject: Re: [dmarc-ietf] auth-res vs. dmarc
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On Wed 30/Dec/2020 02:30:40 +0100 Douglas Foster wrote:
> DKIM, A-R, and ARC should all have a mandatory attribute indicating the HELO 
> name of the server applying the header, the IP Address of the previous server 
> which supplied the information being evaluated, or both.


For DKIM, the HELO name is irrelevant.  d= determines who did the deed.

A-R and ARC have an authserv-id which is often consistent with HELO.


Best
Ale
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