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Add-RecipientPermission You can't use the domain because it's not an accepted domain
I'm trying to give my user SendAs rights on a shared mailbox. Both the EAC and Exchange Online Powershell give me the error that I cannot do it because "You can't use the domain because it's not an a...
Never mind, I'm an idiot. It was the shared mailbox that had the illegal emailaddress. My colleague apparently removed a domain from this tenant recently and forgot to remove the emailaddresses.
Never mind, I'm an idiot. It was the shared mailbox that had the illegal emailaddress. My colleague apparently removed a domain from this tenant recently and forgot to remove the emailaddresses.