On Wed, Dec 9, 2020 at 2:27 PM Michael Thomas <m...@mtcc.com> wrote: > > On 12/8/20 4:51 PM, Brandon Long wrote: > > > > On Mon, Dec 7, 2020 at 8:31 PM John R Levine <jo...@taugh.com> wrote: > >> On Mon, 7 Dec 2020, Murray S. Kucherawy wrote: >> > The original intent back in RFC 5451 was to relay only those details >> that >> > an MUA might care about, such as the DKIM result (so you can display >> > something representing a "pass" or "fail" on a message) and maybe the >> > domain name found in a passing signature (an early shot at caring about >> > alignment when rendering a message). ... >> >> I suppose but 5451 also says it might be useful to message filters. >> > > Right, there are clearly MUAs that do some amount of spam filtering, so > disposition > of p=quarantine would seem to be useful for that. > > Is there any evidence for that though? I would assume that the folks on > this list use a diverse set of MUA's and would be in a position to tell us > if some of them do. I'm guessing by your statement that gmail doesn't do > anything different. > Gmail does put messages with disposition quarantine into the spam label, but we don't rely on the A-R header to pass that information from the smtp transaction to the mailbox.
At least the Mac Apple Mail client did have a client-side spam filter, looks like it probably still does: https://support.apple.com/guide/mail/reduce-junk-mail-mlhlp1065/mac Does it handle spf/dkim/dmarc in any way? I don't know. Brandon
_______________________________________________ dmarc mailing list dmarc@ietf.org https://www.ietf.org/mailman/listinfo/dmarc
