> 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.
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.
Ken._______________________________________________
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