I confirm that, emails in the queue are only to "eur0x.prod.outlook.com" MX.

Il 11/10/23 16:06, Lilium via mailop ha scritto:

It appears to us that the delay only affects EU SMTP servers.
US SMTP servers delivery is fine.

Regards
Andrea


On 11/10/2023 11:12, Andreas via mailop wrote:
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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