I found the problem. Stupid error in the client code. Getting two different InitialContext instances with different URL_PROVIDERs. The first Context was pointing local and used to lookup the ConnectionFactory, the second Context was pointing remote and used to lookup the Topic Name. I'm not sure why this would fail silently, but it did. Problem solved. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4163156#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...