I didn't see any error information in either server's log. I'm running this again to verify that I didn't just over look something. As for the ServerPeerID's, I did not explicitly set it on either server. However I've been using different jboss.service.binding.set values for the two. Does that change the ServerPeerID? I haven't seen any warnings or errors related to the PostOffice during startup of either server. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4233607#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...