Learner's definition of SOLE. always used before a noun. 1. : only or single. He became the sole heir to the property. the sole owner. The sole aim/objective/purpose of the program is to help the poor. She was the sole survivor of the tragedy. Icy roads were the sole cause of the accident. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples
Dead letter mail or undeliverable mail is mail that cannot be delivered to the addressee or returned to the sender.ith increased collection and study of the postal markings originating from such offices, the body of literature on this obscure topic may grow. Many countries, including Canada and the United States, have issued special labels for envelopes that have travelled through the dead letter office.
Dead-letter queues are system-generated queues used for storing messages that could not be delivered. Message Queuing creates a transactional and a nontransactional dead-letter queue on each computer during setup. Storing undelivered messages on the source computer is called negative source journaling.hen a message is placed in a dead-letter queue, Message Queuing changes the class property of the message (PROPID_M_CLASS or MSMQMessage.MsgClass) to reflect the last known status of the message.