Am 10.08.2024 um 22:14 schrieb Bill Cole via Postfix-users:
This is caused by a misconfiguration of the account or the entire domain
in MS365. It can only be fixed on the Microsoft side.
Hello Bill,
I don't know anything about Microsoft Office 365 and email.
What does the error depend on?
Is the server (sender-domain.mail.protection.outlook.com) running
directly at Microsoft and is it managed by MS, or is it running at an IT
system house that then manages the server for the recipient?
Christian
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