Just to complete the thread... We will change the intercept method as void intercept (Packet packet) throws MessagingException And we will also change how this is configured. An user will have to enter its interceptor on the jbm-config.xml, and that interceptor will need to be available on the server side classLoader. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4124534#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...