18.104.22.168 Negative Source Journaling
Negative source journaling tracks unsuccessfully sent messages by placing message copies in the local host dead-letter queue. When a message queuing application requests negative source journaling, messages are processed differently, depending on the message type.
For non-transactional messages, a copy of the message is placed in the local host dead-letter queue. Failure indicates that the source queue manager on the host cannot transfer the message to the destination host queue manager.
For transactional messages, a copy of the message is placed in the transactional dead-letter queue of the local host only if Message Queuing does not confirm that the message was retrieved from its destination queue.