On Mon, Dec 09, 2024 at 04:29:54PM +0100, Tobi via Postfix-users wrote:

> Finally found it :-) RCPT domain changed not long ago from Gmail to
> Microsoft and uses mta-sts. Out mta-sts resolver still had the policy
> for gmail, therfore the delivery to Microsoft could not be verified. We
> just deleted the policy for gmail from our mta-sts resolver and now it
> has the correct policy for Microsoft.
> 
> Thanks @Victor for your support

You're quite welcome.  Nice to see that the problem analysis and
solution making sense. :-)

--
    Viktor.
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