Problem solved: instead of activemq-core 5.2.0, now I am using activemq-all 5.2.0, and this solved the problem. Maybe it was just a problem with a wrong file in my local Maven repository.
Cheers, ----- Michael Justin SCJP, SCJA betasoft - Software for Delphi™ and for the Java™ platform http://www.mikejustin.com - http://www.betabeans.de -- View this message in context: http://www.nabble.com/Log4jJMSAppenderExample%3A-Wire-format-negotiation-timeout%3A-peer-did-not-send-his-wire-format-tp25422809p25422920.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.