Hi, I could solve this problem by modifying my JMS clients to close JMS connection and re-connect when: 1. a JMSException is caught when sending a message 2. object implementing ExceptionListener is notified about an error with Connection. This made my client a little bit more complex (e.g. "reconnector" thread responsible to handle reconnection) but communication is now reliable. regards, Samuel View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4172993#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...