I took a look at sections 4.5 and 4.6 of the draft, the part that describes the tree walk and PSD, and unfortunately what it currently says is seriously wrong. Apologies for not catching this sooner.
It currently says you do a tree walk to find a PSD record, and the org domain is the one under the PSD. That's fine if there's a PSD record, but in the vast majority of cases there will not. There is no chance that .COM or .ORG or .NET or any of the other public gTLDs will ever publish a DMARC record because they are not in the business of managing their customers' mail. (There are also acronym-studded ICANN reasons they couldn't even if they wanted to, ask me if you want the details.) What I always intended with the tree walk is that you walk up the tree and if you find a DMARC record that isn't a PSD, that's your org domain. To see if two names are in relaxed alignment, do a tree walk for both and if they end at the same place, they're aligned. As a special case albeit a very common one, if one name is a descendant of the other, and there are no DMARC records in between, they're aligned. This means that if there's no PSD and no higher level DMARC records, there's no org domain, but I believe that we discussed this before and in practice it doesn't matter. R's, John _______________________________________________ dmarc mailing list [email protected] https://www.ietf.org/mailman/listinfo/dmarc
