Email to Mail Error - Entity AccountAddress with id XXXXXXX could not be found Please see the server log to find more detail regarding exact cause of the failure.

Error: Entity AccountAddress with id XXXXXXX could not be found Please see the server log to find more detail regarding exact cause of the failure.

Cause: This error occurs when the return address associated with a mailbox has been deleted. To resolve, add or edit a return address in your account. Then, edit the mailbox and associate that return address with the mailbox.