1.3.5.2 Durable Messages

Messages sent as durable messages are written to stable storage on both the sending and receiving computer. After delivery to the destination queue, durable messages are stored on disk until a user application accesses them.

 Disk storage makes delivery somewhat slower than with regular messages but is ideal when persistence through service restart or failure is required. If a computer fails or is shut down while sending messages, the messages are stored on disk. When the computer is restarted and the QM service restarts, the sending process automatically resumes. Durable messages are not guaranteed to be delivered only once or in order.

Durable messages correspond to recoverable messages, as described in [MS-MQQB] section 1.3.2.1.2.