We have two issues floating here: 1) For policy lookup, replace the PSL with a constrained tree walk. 2) For authentication testing, replace the PSL with something based on the policy lookup.
Currently, the DMARC policy has nothing to do with the authentication test. If the second idea is still on the table, we need a definition and a defense of the algorithm. If the suggestion is withdrawn, please say so. Doug Foster On Sat, Oct 30, 2021 at 3:56 PM Scott Kitterman <skl...@kitterman.com> wrote: > > > On October 30, 2021 6:20:19 PM UTC, Alessandro Vesely <ves...@tana.it> > wrote: > >On Fri 29/Oct/2021 23:29:13 +0200 Scott Kitterman wrote: > >> On Tuesday, October 26, 2021 10:09:13 PM EDT John Levine wrote: > >>> It appears that Scott Kitterman <skl...@kitterman.com> said: > >>>> > >>>> Until we understand what we want, overall, selecting a specific > design to > >>>> achieve that goal is premature. Both of those approaches will give a > >>>> wrong answer (at least as I'd define it) for less usual cases. > >>> > >>> Yup. I think I was the first person to propose a tree-walk, so here is > >>> roughly what I was thinking: > >>> > >>> The problem with organizational domain is that it is ill-defined. It > waves > >>> its hands and says to use something like the PSL, and in practice > everyone > >>> uses the PSL. > > > > > >That usage has proven to work quite well. And some respect for the > installed > >base wouldn't hurt. > > The alternative I suggested is 100% compatible with the installed base. > If a domain has published DMARC policy per RFC 7489, the proposed new > approach will still find it. I agree that something which would require > existing DMARC records to be changed would be a non-starter. > > I'm not sure how much more respectful we can manage to be. > > Scott K > > _______________________________________________ > dmarc mailing list > dmarc@ietf.org > https://www.ietf.org/mailman/listinfo/dmarc >
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