That's the same thing as host1.a.b.c.d.e.f.example.com, right? I don't think there's any special case needed to find a common parent.
Scott K On November 3, 2021 2:49:03 PM UTC, Douglas Foster <[email protected]> wrote: >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 <[email protected]> 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 < >> [email protected]> 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 <[email protected]> wrote: >> > >> >> It appears that Scott Kitterman <[email protected]> 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 [email protected] https://www.ietf.org/mailman/listinfo/dmarc
