Hi,
On 06.05.2025 13:12, Benoit Panizzon via mailop wrote:
In the google.com case only the Envelope Sender was SPF protected, no
DKIM signature and no DMARC policy published for From Domain
but this seemed to be sufficient in the past.
DKIM has become much more unavoidable in the recent years, so do try
recommending that if someone's recipient is forwarding letters.
In some cases the recipient can also configure trusted ARC signers (and
add the forwarder to it, if they implement ARC signing).
Same goes for forwarding you're doing yourself for letters coming from
them (Google/Yahoo), we've also seen ARC help a bit there. Even if being
on a trusted list is not likely some heuristics are at play and help out.
Best Regards,
Taavi
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