Glad to have your opinion on this. What is your process for determining whether a private registrar's clients use their subtree for mail? I am aware of several technical obstacles to making that sort of determination, so I wonder how you both resoled those obstacles.
The jump-to-5 rule was chosen BECAUSE we knew that the PSL had 5-segment entries. The choice of 5 instead of 6 was simply a failure to remember the difference between a registrar domain and its client organizational domains. Doug On Tue, Apr 19, 2022 at 5:18 PM John Levine <[email protected]> wrote: > It appears that Scott Kitterman <[email protected]> said: > >> What PSL entries that are 5 long are you worried about? When we looked > at > >> this before, 5 seemed sufficient. Changing the number, now, isn't a big > >> deal. > > > >OK, I checked. Here's the list: > > I also recently went through the PSL looking for DMARC records and I agree > with Scott, > nothing longer than 5 is likely to be used for mail. > > R's, > John > > _______________________________________________ > dmarc mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/dmarc >
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