I changed the subject to make it clear that this is not about mail filtering in general. It is about Scott's draft.
On Mon 08/Apr/2019 02:50:44 +0200 John Levine wrote: > > A decent spam filter will treat a nonexistent From: domain or envelope > bounce address as extremely suspicious and send the message into spam > folder purgatory. If someone's filters aren't doing that, it is > unlikely that they're paying much if any attention to DMARC, and no > amount of fiddling with DMARC will make any difference. > > My mail server rejects anything with a non-existent bounce address at > SMTP time and I don't think it's ever rejected anything my users would > want. Me too. However, I don't reject nxdomain in From:. I have the option, but I disabled it because some mailing lists have (had?) authors with addresses like [email protected]. That said, rethinking boils down to consider if it would suffice to look up the PSD's _dmarc record only in case of non-existing domains. Existing domains can be forced to publish adequate DMARC records by forging a suitable PSD's policy. That way, old-fashioned mailing lists can continue to use picturesque From:'s as long as they are based on traditional TLDs (assuming .com won't publish a strict DMARC policy.) And no central repository. jm2c Ale -- _______________________________________________ dmarc mailing list [email protected] https://www.ietf.org/mailman/listinfo/dmarc
