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Re: [dmarc-ietf] Nonexistent Domain Policy was: Re: Working Group Last Call: draft-ietf-dmarc-psd

"Kurt Andersen (b)" <kboth@drkurt.com> Fri, 19 July 2019 15:33 UTC

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From: "Kurt Andersen (b)" <kboth@drkurt.com>
Date: Fri, 19 Jul 2019 08:33:38 -0700
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To: Scott Kitterman <sklist@kitterman.com>
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Subject: Re: [dmarc-ietf] Nonexistent Domain Policy was: Re: Working Group Last Call: draft-ietf-dmarc-psd
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On Fri, Jul 19, 2019 at 8:30 AM Kurt Andersen (b) <kboth@drkurt.com> wrote:

> On Thu, Jul 18, 2019 at 10:42 PM Scott Kitterman <sklist@kitterman.com>
> wrote:
>
>>
>> If we want to take another run at this and put it in more standard DNS
>> terminology, then maybe:
>>
>> .... a domain for which there is an NXDOMAIN or NODATA response for A,
>> AAAA,
>> and MX records.
>>
>> I think that cures John's concern with my last proposal and addresses
>> yours as
>> well (the response to a CNAME/DNAME is not NODATA/NXDOMAIN, so they are
>> correctly followed).
>>
>
> Yes - I think that will fix my concerns (and John's too).
>

Thinking about this from a reporting POV, where would a receiver categorize
messages which ended up with SERVFAIL during the process of DMARC (regular
or PSD)? Would "sp" handling or "np" handling be invoked for SERVFAIL (such
as a broken DNSSEC implementation)?

--Kurt

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