Source: GroupWise engine; administration engine.
Explanation: The POA is used as the message transfer recipient for its post office.
Possible Cause: You are trying to delete a a POA that is part of the TCP/IP link between the post office and domain through which messages arrive in the post office.
Action: Set up a different POA to provide the link to the domain MTA. See "Using Client/Server Access to the Post Office" in "Post Office Agent" in the GroupWise 6.5 Administration Guide. After another POA has been set up to provide the link with the MTA, the original POA can be deleted.