"Unable to validate user" during MDB deployment in JBoss EAP 5.1

Issue

• When using HornetQ as the JMS provider this WARN is printed in the log when an MDB is deployed:

    WARN  [HornetQActivation] Failure in HornetQ activation org.hornetq.ra.inflow.HornetQActivationSpec(ra=org.hornetq.ra.HornetQResourceAdapter@135954c destination=queue/A destinationType=javax.jms.Queue ack=Auto-acknowledge durable=false clientID=null user=null maxSession=15)
    HornetQException[errorCode=105 message=Unable to validate user: null for check type CONSUME for address jms.queue.A]
      at org.hornetq.core.protocol.core.impl.ChannelImpl.sendBlocking(ChannelImpl.java:287)
      at org.hornetq.core.client.impl.ClientSessionImpl.internalCreateConsumer(ClientSessionImpl.java:1556)
      at org.hornetq.core.client.impl.ClientSessionImpl.createConsumer(ClientSessionImpl.java:447)
      at org.hornetq.core.client.impl.ClientSessionImpl.createConsumer(ClientSessionImpl.java:392)
      at org.hornetq.core.client.impl.DelegatingSession.createConsumer(DelegatingSession.java:201)
      at org.hornetq.ra.inflow.HornetQMessageHandler.setup(HornetQMessageHandler.java:165)
      at org.hornetq.ra.inflow.HornetQActivation.setup(HornetQActivation.java:295)
      at org.hornetq.ra.inflow.HornetQActivation$SetupActivation.run(HornetQActivation.java:574)
      at org.jboss.resource.work.WorkWrapper.execute(WorkWrapper.java:205)
      at org.jboss.util.threadpool.BasicTaskWrapper.run(BasicTaskWrapper.java:260)
      at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
      at java.lang.Thread.run(Thread.java:619)

• This ERROR comes soon after the WARN:

    ERROR [HornetQActivation] Unable to reconnect org.hornetq.ra.inflow.HornetQActivationSpec(ra=org.hornetq.ra.HornetQResourceAdapter@7e6024 destination=topic/testTopic destinationType=javax.jms.Topic ack=Auto-acknowledge durable=true clientID=TopicMDB subscription=TopicMDB user=null maxSession=15)
    HornetQException[errorCode=105 message=Unable to validate user: null for check type CONSUME for address jms.queue.A]
       at org.hornetq.core.protocol.core.impl.ChannelImpl.sendBlocking(ChannelImpl.java:287)
       at org.hornetq.core.client.impl.ClientSessionImpl.internalCreateConsumer(ClientSessionImpl.java:1556)
       at org.hornetq.core.client.impl.ClientSessionImpl.createConsumer(ClientSessionImpl.java:447)
       at org.hornetq.core.client.impl.ClientSessionImpl.createConsumer(ClientSessionImpl.java:413)
       at org.hornetq.core.client.impl.DelegatingSession.createConsumer(DelegatingSession.java:187)
       at org.hornetq.ra.inflow.HornetQMessageHandler.setup(HornetQMessageHandler.java:143)
       at org.hornetq.ra.inflow.HornetQActivation.setup(HornetQActivation.java:295)
       at org.hornetq.ra.inflow.HornetQActivation.handleFailure(HornetQActivation.java:540)
       at org.hornetq.ra.inflow.HornetQActivation$SetupActivation.run(HornetQActivation.java:578)
       at org.jboss.resource.work.WorkWrapper.execute(WorkWrapper.java:205)
       at org.jboss.util.threadpool.BasicTaskWrapper.run(BasicTaskWrapper.java:260)
       at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
       at java.lang.Thread.run(Thread.java:619)