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

Dave Crocker <dcrocker@gmail.com> Mon, 28 September 2020 17:46 UTC

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To: "Kurt Andersen (b)" <kboth@drkurt.com>
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From: Dave Crocker <dcrocker@gmail.com>
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Date: Mon, 28 Sep 2020 10:46:05 -0700
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Subject: Re: [dmarc-ietf] Call for Adoption: DMARC Use of the RFC5322.Sender Header Field
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On 9/28/2020 8:35 AM, Kurt Andersen (b) wrote:
>
>     >   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.
>
drat.  yes.

I was far too distracted by the word 'disposed of'.  given that it is 
related to 'disposition' there's nothing semantically wrong with its use.

but given that 'disposing of' the message is a domain owner goal, 
frequently, perhaps changing "disposed of" to "processed" would be less 
inviting of misunderstanding? robustness against reasonable 
misunderstanding is helpful... (I could even squeeze in a reference to 
the Postel rule, applied to specification writing.)

d/

-- 
Dave Crocker
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