Hi, On Fri, Mar 01, 2024 at 11:00:13AM +0000, Gareth Evans wrote: > https://support.google.com/a/answer/81126?hl=en#requirements-5k&zippy=%2Crequirements-for-sending-or-more-messages-per-day%2Crequirements-for-all-senders > > mentions DMARC in requirements for all senders: > > "Don’t impersonate Gmail From: headers. Gmail will begin using a DMARC > quarantine enforcement policy, and impersonating Gmail From: headers might > impact your email delivery."
Talks about gmail's own use of DMARC, not the sender's. > Can a "DMARC quarantine enforcement policy" operate, if the sender > doesn't use DMARC? This idea seems to relate more to SPF than > anything? gmail's own policy is quarantine so if you send from somewhere that isn't gmail, while pretending to be from a gmail property, gmail indicates that it wishes¹ for your email to be quarantined by the recipient. Thanks,. Andy ¹ Even receiving sites that process DMARC sometimes don't carry out the DMARC author's wishes. As a common example that most of us will have seen, Mailman mailing lists will often just selectively rewrite the headers. -- https://bitfolk.com/ -- No-nonsense VPS hosting
