I have two different clusters setup. There are 4 nodes in the clusters (2 per cluster) that are spread across two machines. So on each machine there are two nodes each in a different cluster. Each of the node in each cluster has a unique ServerPeerID. Also looking at the PostOffice JMX Bean on nodes in each cluster has different ChannelPartitionName. Also each cluster uses a different port binding configuration. What can cause the messages sent on the same topic from one node in a cluster to be picked by nodes in other cluster. I am Using: JBoss 4.2.1-GA and JBoss messaging 1.3.0-GA. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4084263#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...