Yes, once session.stop() has returned it should be guaranteed no more messages will be received on a handler until it's started again. However we shouldn't wait for all messages in the buffer to be processed - this might take a long time. We should only wait for the currently executing one to complete. The same behaviour should be on close() and setMessageHandler(null). View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4218893#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...