Transaction Dead-Letter Queues

A transactional message that cannot reach the destination application is stored in the transaction dead-letter queue on the source computer. Transaction dead-letter queues are created for each independent client and server on your MSMQ network when MSMQ is installed on that computer. MSMQ Explorer displays these queues as Xact Dead Letter, under the computer.

Transactional messages cannot reach the destination application when:

• The sending transaction is ended (for example, because another transaction participant failed).
• The message failed to reach the destination queue during the specified Time-To-Reach-Queue interval.
• The message is rejected by the destination queue (due to security or quota settings, or because the destination queue is not a transactional queue).
• The message reached the queue, but was not successfully received from the destination queue during the specified Time-To-Reach-Queue interval.
• The receiving transaction failed.

For more information on transactional messages, see "Transactional Messaging" later in this chapter.

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