10.1.200.129 is not a multicast/class D IP address. Are there any warnings being logged? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4171025#4171025 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4171025