I redelivery accounts for the situation where: 1- the jms queue you are trying to use has gone AWAL. So the ServiceInvoker will still find the EPR in the Registry, but at that point it is a 'dead' EPR. When the JMS provider comes back online your message should get redelivered. 2. The destination service is on a different box and the service EPR (or even the service) has not yet registered with the registry. Delivery will be retried until either successful or the max number of retries are reached, after which it is stored in the MessageStore with classification DLQ. --K View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4073990#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...