| 1. | Delivery failure could be caused by a message timer expiring , for example
例如，可能由于消息计时器过期而导致传递失败。 |
| 2. | Property to request that message queuing send a negative acknowledgment message back to the sending application if the message does not arrive before the timer expires
属性，请求消息队列如果消息在计时器过期之前仍未到达，向发送应用程序发回否定的确认消息。 |
| 3. | Property to request that message queuing send a negative acknowledgment message back to the sending application if the message is not retrieved before the timer expires
属性，请求消息队列如果在计时器过期前没有检索到消息，向发送应用程序发回否定的确认消息。 |
| 4. | Two types of messages remain untracked : those that are removed from the queue because their time - to - be - received timer expired , and those that are purged from the queue
两种类型的消息不被跟踪：一种是由于其接收时间计时器过期而被移除的消息，另一种是从队列中清除的消息。 |
| 5. | Property can be set to request that message queuing send a negative acknowledgment message back to the sending application if the message does not arrive before the timer expires
属性可以设置为如果在计时器过期前消息没有到达，请求消息队列向发送应用程序发回一条否定的确认消息。 |
| 6. | However , two types of messages remain untracked : those that are removed from the queue when their time - to - be - received timer expires , and those that are purged from the queue
但不跟踪两种类型的消息：一种是当其接收时间计时器过期时从队列中移除的消息，另一种是从队列中清除的消息。 |
| 7. | Property can be set to request that message queuing send a negative acknowledgment message back to the sending application if the message is not retrieved before the timer expires
属性可以设置为如果在计时器过期前没有检索到消息，请求消息队列向发送应用程序发回一条否定的确认消息。 |
| 8. | Then in case of delivery failure for non - transactional messages , the message is sent to the non - transactional dead - letter queue on the computer that could not deliver the message for example , if a message timer expires
，那么一旦传递失败（对于非事务性消息而言） ，消息将被发送到未能传递消息（例如，消息计时器过期）的计算机上的非事务性死信队列。 |
