EM-3120
The shared mailbox address cannot be reached
Why it happens
Rabt could not open the shared mailbox’s inbox with the signed-in account: the address may be wrong, or the account has no Full Access to it.
What to do
Check the shared mailbox’s address, ask your Microsoft 365 administrator to give your account Full Access and Send As on it, then start connecting again.
- HTTP status
- 422
- Retrying does not help
- Placeholders
- address