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Re: [dmarc-ietf] Call for Adoption: DMARC Use of the RFC5322.Sender Header Field

"Kurt Andersen (b)" <kboth@drkurt.com> Mon, 28 September 2020 15:36 UTC

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From: "Kurt Andersen (b)" <kboth@drkurt.com>
Date: Mon, 28 Sep 2020 08:35:58 -0700
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To: Scott Kitterman <sklist@kitterman.com>
Cc: "dmarc@ietf.org" <dmarc@ietf.org>
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Subject: Re: [dmarc-ietf] Call for Adoption: DMARC Use of the RFC5322.Sender Header Field
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On Sun, Sep 27, 2020 at 11:23 AM Scott Kitterman <sklist@kitterman.com>
wrote:

> On Sunday, September 27, 2020 1:16:11 PM EDT John Levine wrote:
>
> Agreed.  Maybe it would help if someone who takes the latter view would
> explain what they think RFC 7489, Section 6.6.2, Step 6 is for:
>
> >    6.  Apply policy.  Emails that fail the DMARC mechanism check are
> >        disposed of in accordance with the discovered DMARC policy of the
> >        Domain Owner.  See Section 6.3 for details.
>
> I don't think that says "then toss the results into your classifier".
>

You completely ignored section 6.7 (Policy Enforcement Considerations)
which states:

> Final disposition of a message is always a matter of local policy.

Local policy could be considered "the output of some classifier" or other
mechanics left to the invention of the receiver.

This is a part of the documented DMARC spec, not a change.

--Kurt

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