Update: the test steps and results are:
1. send 20 messages to the broker, the admin console displays 20 messages, numbered from 1 to 20 2. consume 10 messages using Stomp client (5.3-Snapshot version) with "ack:auto", now the admin console displays only messages numbered from 13 to 20 - it looks like message 11 and 12 are lost 3. try to consume 10 messages again: the Stomp client only receives 8 messages I will try it with the current snapshot Best Regards, Michael Justin -- View this message in context: http://www.nabble.com/Stomp-ack%3Aauto-clears-all-remaining-messages-in-the-queue-tp23074533p23100944.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.