> On 3 Feb 2026, at 10:49, Ken O'Driscoll <[email protected]> wrote: > > >> On 3 Feb 2026, at 10:09, Laura Atkins <[email protected]> wrote: >> >> They both sign with ARC and that is only half of ARC. As far as I'm aware >> neither company has said that they use ARC on the incoming mail streams. >> It’s very possible I missed their statements on the fact. Has either company >> mentioned they’re using it as part of their delivery engine? > > They are both still publicly promoting implementing ARC in their sender > requirements/best practices for forwarders. I think that’s a strong signal > that they use it on the receiving side.
I am not sure these public statements are actually an indication they’re currently using it in any meaningful way on the inbound, possibly because enough folks aren’t signing or because, like the folks we’ve seen here, they find it of questionable value for their filtering scheme. > Google: > > Email sender guidelines (https://support.google.com/a/answer/81126) > Best practices for for forwarding mail to Gmail > (https://support.google.com/mail/answer/175365) > > Yahoo: > > Sender Requirements and Recommendations > (https://senders.yahooinc.com/best-practices/) > > > I support option 1 because ARC is not widely useful and DKIM2 looks like a > better approach. But if it remains in production supporting a niche use case > amongst very large senders, then I think that fact should be noted as part of > the historic process. I support option 1 as well. laura -- The Delivery Expert Laura Atkins Word to the Wise [email protected] Delivery hints and commentary: http://www.wordtothewise.com/blog
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