I was looking in the JMS forum and a message eluded that to get distributed JMS with JBoss, it has to be configured through JCA. It briefly mentioned adjusting the jboss.jca:service=XaTxCM and jboss.jca:service=XaTxDS in jms-service.xml. I was wondering if someone here could provide me with a more detailed explanation of why it is adjusted here and what I actually have to adjust. Basically, I want to connect multiple JBoss instances to the same message queues. Thanks in advance for any help.