This might be the wrong forum but..
I've had a look at the jboss 4.2.0 code and as far as I can see the DLQ handler
never receives the exception,
it only receives the Message again and has to figure out if it should be dlq'ed
or not..
I haven't had a chance to look at Messaging 1.4.0.CR1
The DLQ support for MDB really is handled by the EJB container, and is not part
of JBoss Messaging itself. There are several pluggable DLQ strategies, see:
http://docs.jboss.org/jbossas/javadoc/4.0.3SP1/connector/org/jboss/resource/adapter/jms/inflow/dlq/package-summary.html
It does seem that
