Possible Cause: The PFA User object does not exist.
Action: Create the PFA User object and give it the necessary rights. (See Setting Up Common Mailbox Forwarding and the POP Forwarding Agent.)
Possible Cause: The PFA User object does not have the necessary rights.
Action: Make sure the PFA User object has the rights it needs. See Setting Up Common Mailbox Forwarding and the POP Forwarding Agent.