On Tuesday, April 16, 2024 2:24:07 PM EDT John Levine wrote: > It appears that Scott Kitterman <[email protected]> said: > >In the case of a.b.c.example.com and example.com is in the PSL, the DMARC > >records in a.b.c.example.com (if present) and example.com (otherwise) are > >consulted. The only way to get to b.c.example.com or c.example.com would > >be to add them to the PSL. These are what I meant by intermediate > >records. > > I get that but in fact there are lots of PSL records underneath .com, more > than 900 of them. > >I don't find cases where it looks like such things have been added to the > >PSL, ... > We know there aren't any in the PSL more than 5 levels deep but there > are plenty shallower than that. I have no idea how many of them are > used for mail but a lot of them look plausible.
... Yes. I think there's a clear argument for n=5. The claim is we need a bigger number. If that were true, I would expect to see longer PSL entries that are plausibly related to email. Scott K _______________________________________________ dmarc mailing list [email protected] https://www.ietf.org/mailman/listinfo/dmarc
