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Re: [dmarc-ietf] PSD vs org, 5.5.4. Publish a DMARC Policy for the Author Domain - dmarcbis-06

John R Levine <johnl@taugh.com> Wed, 06 April 2022 02:22 UTC

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Date: 5 Apr 2022 22:21:52 -0400
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From: "John R Levine" <johnl@taugh.com>
To: "Scott Kitterman" <sklist@kitterman.com>, dmarc@ietf.org
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Subject: Re: [dmarc-ietf] PSD vs org, 5.5.4. Publish a DMARC Policy for the Author Domain - dmarcbis-06
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On Tue, 5 Apr 2022, Scott Kitterman wrote:
>>> _dmarc.ac.me TXT "v=DMARC1; p=quarantine; adkim=r; aspf=r; fo=0; pct=100;
>>> rua=mailto:dmarc@ac.me" ac.me mail is handled by 10 mail.ac.me.
>>> ac.me TXT "v=spf1 mx ip4:89.188.43.10 ip6:2a02:4280:0:200:89:188:43:10 -all"

> Generally speaking, I think that a PSD can send mail and it should be covered
> by DMARC, so I disagree with the idea that a PSD can never also be an Org.

How about if we say that if the initial domain has psd=y, that's the org 
domain and you don't look anywhere else.  That is easy to explain and I 
don't think we are likely to find anything that better matches the 
expectations of people who send mail from PSDs.

There are 44 domains in the "ICANN" part of the PSL that have MX records 
and at least 400 in the "PRIVATE" part so I think it would be a good idea 
to have a plan for how DMARC works for them.

R's,
John

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