"timfox" wrote : It all seems a bit complex. | | If we just delay delivery of a message in a ordering group until all the previous ones are acked by the consumer then problem solved? | | This fits in with andy's work on message grouping... Message grouping guarantee all the messages in a group goes to one consumer. But ordering group is different, it guarantees messages being sent out one by one, it doesn't really care who receives the message. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4183804#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...