Gents, You'll want to change your MDBs to look in the global jndi tree for the JMS Queue/Topic it is trying to bind to. See this wiki entry: http://wiki.jboss.org/wiki/HowToConfigureMDBsToSubscribeToATopic Basically, since the JMS Server (Jbossmq) is a cluster singleton and so are its destinations, you'll need to use the cluster port (1100 by default) instead of the local (1099) jndi port. Otherwise your MDBs will never start because they are dependant on the DestinationManager service (again only runs on the active jms node) Hope this helps... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4175936#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...