"PeterJ" wrote : 4) If you don't need clustering, in mysql-persistence-service.xml set "Clustered" to false and comment out the "ChannelFactoryName" attribute. Ok, so I lied about the last one. After commenting it out PostOffice starts and there are no problems with JBM. Thanks PeterJ! "mysql-persistence-service.xml" placed in examples is very misleading, as it has "clustered" attribute set to false by defaulf, while "ChannelFactoryName" is not commented, and doesn't even appear in logs as a source of a problem. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4197136#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...