Source: GroupWise engine; Message Transfer Protocol.
Explanation: The specified port is already in use.
Possible Cause: You have set up the POA to communicate with the MTA by way of TCP/IP but the TCP port you have chosen for the Message Transfer Protocol (MTP) link between them is already in use by another program.
Action: The message transfer port configured for the POA should be the same port number as the MTA is using to listen on. Make sure the MTA is set up correctly for TCP/IP links. Make sure the POA is configured with the message transfer port number matching the port number of the MTA. See "Changing the Link Protocol between the Post Office and the Domain" in "Post Office Agent" in the GroupWise 6.5 Administration Guide.
Action: Record the conditions under which you encountered the error. For the latest error code solutions, search for TIDs about the error code in the Novell Support Knowledgebase .