On Wed, Feb 1, 2023 at 7:14 PM Douglas Foster < [email protected]> wrote:
> > What does matter is that the NP policy should only apply when the > organization domain is non-existent. Existing domains have the right to > send using a non-existent subdomain. > I disagree with both statements here. A policy record containing an 'np' tag cannot exist in the DNS at _dmarc.domain without the name 'domain' existing in the DNS, so I can't even really parse your first statement. Can you clarify what you mean here, please? Beyond that, the np tag is currently defined (correctly, in my opinion) thusly: Indicates the message handling preference of the Domain Owner or PSO for mail using non-existent subdomains of the domain queried. It applies only to non-existent subdomains of the domain queried and not to either existing subdomains or the domain itself. As for the claim that existing domains have the right to send using a non-existent subdomain, while such sending practices are outside the scope of DMARC, those domains should have no expectation that such mail will be accepted, on the grounds that the RFC5322.From domain being non-existent means that the message cannot be replied to, and is therefore not worthy of acceptance. -- *Todd Herr * | Technical Director, Standards and Ecosystem *e:* [email protected] *m:* 703.220.4153 This email and all data transmitted with it contains confidential and/or proprietary information intended solely for the use of individual(s) authorized to receive it. If you are not an intended and authorized recipient you are hereby notified of any use, disclosure, copying or distribution of the information included in this transmission is prohibited and may be unlawful. Please immediately notify the sender by replying to this email and then delete it from your system.
_______________________________________________ dmarc mailing list [email protected] https://www.ietf.org/mailman/listinfo/dmarc
