Hello all,
since a few hours we have problems with sending to Microsoft. We get
hundreds of messages like in the subject with the reference to S77719.
Also colleagues from other companies in germany are seeing the same in
their logs. All mails that are blocked here are from Microsoft
customers, but they are redirected through our servers.
Trying to unblock the IP e.g. via https://sender.office.com/ shows that
the IPs are not blocked.
Anybody have any idea?
Thanks a lot
Andreas
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