DLQ - Dead Letter Queue

If an application tries to put a message to another

application and if it is not delivered then it goes to the

DLQ. So DLQ is nothing but all undelivered messages stored

in DLQ.

Alterenate Defination:

The dead-letter queue is a local queue where messages are

put if they cannot be routed to their intended destination

You need to create a DLQ at the time of creating a Queue

Manager.

crtmqm -q -d MY.DEFAULT.XMIT.QUEUE -u

SYSTEM.DEAD.LETTER.QUEUE SATURN.QUEUE.MANAGER

where -u is dead letter queue