Thank you for all your replies. After a restart during server maintenance (of server3) things are now working strangely enough, I have no idea why unfortunately. To answer your questions:
No, we don´t specify a TTL for the messages so I assume some default value is used. No, there shouldn´t be any client connecting to the queue.srv1 or queue.srv2 on server3, and as far as I can tell there hasn´t been. (All our clients are websites so no app that someone can accidentally start on the server either) And no, the enqueue/dequeue counter on the server1 and server2 never increased, it was as if the messages simply disappeared. For now I guess I can´t do anything about it since it is working now but I´ll keep monitoring and try using JConsoler (thanks for that suggestion Tim) to investigate more if it happens again. While going through the logs on server1 I actually found this message repeated a few times: INFO | localhost ignoring sub from server3, browsers explicitly suppressed. But that seems (tome at least) to indicate that subscribers on server3 could be having problems getting messages sent on server1, but that was never the case... Best regards, MagnusT -- View this message in context: http://activemq.2283324.n4.nabble.com/Network-of-brokers-problems-tp4704041p4704076.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.