There was a transient field in my message class that was changed for testing and we forgot to put it back to transient status. Hence the message object was not serializable. It would have been nice if JBoss Messaging would display an message or throw an exception instead of silently swallowed the error and not route the message to its destination. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4035198#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...