In summary, your code don't know how to resume sending at all. On the process of resuming send, you should also check if largeMessageDeliverer != null and resume sending a largeMessage. If you provide some sort of QueueIterator implements Queue as I said you won't need to change a line on the ServerConsumer, what would be much easier to debug. Writing the thread the way you did may look a shortcut (less code), but this promptDelivery thing was a hard thing to tune up. (I needed some time to get my head into it). If you avoid touching it would be better for you. Just my 2 cents.. and my idea anyway. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4239153#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...