Because the POA delivers messages to mailboxes, responds in real time to users in Online mode, and maintains all databases located in the post office, its functioning affects the post office and all users who belong to the post office. Proper POA configuration is essential for a smoothly running GroupWise system. Complete details about the POA are provided in Section IV, Post Office Agent. As you create and manage post offices, you should keep in mind the following aspects of POA configuration: