Status code: 550 5.1.1 Unknown To address

Question

Hello,

We recently created a new tenant in Microsoft.
Added domain (NS servers point to microsoft), all configurations are done by microsoft automatically.
I have created couple users and assigned BP licenses to them.
But when I try to mail them I receive this kind of an error:
550 5.1.1 <mail@keyman .com>: Recipient address rejected: User unknown in relay recipient table

Users are able to send messages, but can't receive them.
Mail address is 100% right, checked this couple times.

Am I missing something?

Thank you in advance!

Answer 1

Ok, I would give it some time then. Setting up a new tenant typically doenst work immediately for email. It might be 48 hours or so. If it still doesnt work after that, I would open a ticket with 365 support.