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Microsoft announced that large senders have to pass SPF and DKIM !

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Le mer. 18 juin 2025 à 10:19, Benny Pedersen via mailop <[email protected]>
a écrit :

> Yves-Marie LE PORS-CHAUVEL via mailop skrev den 2025-06-18 10:02:
>
> > _550 5.7.515 Access denied, sending domain DOMAIN.TLD doesn't meet the
> > required authentication level. The sender's domain in the 5322.From
> > address doesn't meet the authentication requirements defined for the
> > sender. To learn how to fix this see:
> > https://go.microsoft.com/fwlink/p/?linkid=2319303 Spf= Pass , Dkim=
> > Fail , DMARC= Pass [XXXXXX] [XXXXXXXXXX]_
>
>         mx.junc.eu (amavis); dkim=fail (1024-bit key) reason="fail
> (message has
> been altered)" header.d=postmastery.net
>
> same problem to solve ?, as i see it, it was alterede before mailop seen
> it
>
> microsoft should not reject dkim fails, but validate dmarc
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