Issue

• What is the behaviour of max-delivery-attempts attribute if it is set to 0 in JBM and in HornetQ?

• When max-delivery-attempts is set to 0 in JBM, it immediately send message to DLQ.

    <mbean xmbean-dd="xmdesc/Queue-xmbean.xml" name="jboss.messaging.destination:service=Queue,name=TestQueue" code="org.jboss.jms.server.destination.QueueService">
    <!-- Defining the DLQ for this TestQueue -->
        <attribute name="DLQ"> jboss.messaging.destination:name=DLQ,service=Queue</attribute>
        <attribute name="JNDIName">TestQueue</attribute>
    <!-- The number of times, undilivered messages would be resend -->
    <attribute name="MaxDeliveryAttempts">0</attribute>
        <depends optional-attribute-name="ServerPeer">jboss.messaging:service=ServerPeer</depends>
        <depends>jboss.messaging:service=PostOffice</depends>
    </mbean>

However with HornetQ if max-delivery-attempts is set to 0, it send message infinite times to client and never send message to DLQ.

<address-setting match="jms.queue.TestQueue">
         <dead-letter-address>jms.queue.DLQ</dead-letter-address>
         <max-delivery-attempts>0</max-delivery-attempts>
         <expiry-address></expiry-address>
         <redelivery-delay>100</redelivery-delay>
         <max-size-bytes>104857600</max-size-bytes>       
         <page-size-bytes>10485760</page-size-bytes>
         <message-counter-history-day-limit>10</message-counter-history-day-limit>
         <address-full-policy>PAGE</address-full-policy>
         <redistribution-delay>6000</redistribution-delay>
</address-setting>