JMSUserManager is really an artifact from JBoss MQ days. It maintains a mapping of user->preconfigured client id. If there is an entry for a user, then when the user creates a connection, the server will preconfigure that connection with that client id. If you don't want that functionality you can ignore it. User, role authentication is done using the messaging JAAS domain. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4125847#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...