Type=A, name=host1, domain=a.b.c.d e.f.example.com Assuming that we will be walking the top n levels, it is only an issue on long domain names.
On Wed, Nov 3, 2021, 10:19 AM Scott Kitterman <skl...@kitterman.com> wrote: > Would you please provide a specific example where this would be needed? > I'm not sure I understand what you mean by resource record names that is > not a DNS domain. > > Scott K > > On November 3, 2021 10:53:07 AM UTC, Douglas Foster < > dougfoster.emailstanda...@gmail.com> wrote: > >The tree walk should address whether we do anything for domain-part names > >that are resource record names rather than DNS domains. Such names > cannot > >be given a _dmarc. subdomain, so they cannot be given an exact-match DMARC > >policy. > > > >Always doing a one-level walk from the bottom would ensure that they can > >have a policy at the closest possible layer. > > > >On Tue, Nov 2, 2021, 10:09 PM John Levine <jo...@taugh.com> wrote: > > > >> It appears that Scott Kitterman <skl...@kitterman.com> said: > >> >4. Common parent domain not marked PSD. We could add a new tag to the > >> DMARC > >> >records for PSDs to indicate it's a PSD, so it's record shouldn't be > used > >> for > >> >alignment. Getting this added to the literal handful of PSD records > that > >> >exist and specifying it should be used going forward is doable. To > >> implement > >> >this approach should produce identical (modulo PSL errors and > omissions) > >> >results to the RFC 7489 approach. It seems like we've decided to trust > >> that > >> >ICANN and ccTLD operators will effectively manage publication of PSL > >> records > >> >for policy discovery, so this leverages that trust to simplify > alignment > >> while > >> >maintaining backward compatibility. > >> > >> This is a much better worked out version of my DNS tree climbing > >> proposal. I like it too. > >> > >> R's, > >> John > >> > >> PS: Just out of nosiness, what PSD records exist now? > >> > >> _______________________________________________ > >> dmarc mailing list > >> dmarc@ietf.org > >> https://www.ietf.org/mailman/listinfo/dmarc > >> > > _______________________________________________ > dmarc mailing list > dmarc@ietf.org > https://www.ietf.org/mailman/listinfo/dmarc >
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