Queues hold messages until they are delivered, or until processes necessary to deliver them, such as address look-up, are complete. There must be an active connection for queues to deliver messages. Managing a queue often entails freezing a connection as well. This temporarily disables a queue for troubleshooting or other administrative tasks.
To change the connection state of a queue:
To manage a single queue, in the details pane, right-click the queue. Then click one of the following options:
|Freeze||This action stops all messages from exiting the queues of a SMTP virtual server, X.400 object, or connector. Messages remain in the queue, and are not processed as long as the queue is frozen.|
|Unfreeze||Unfrozen queues will resume message delivery. This action allows Exchange to attempt to transfer messages out of the SMTP virtual server, X.400 object, or connector queues.|
|Force Connection||This action forces an immediate connection to a remote server without waiting for the next retry attempt (if retry intervals have been set). For example, it can be used to immediately connect to a server that has just rebooted.|
Note X.400 queues cannot be frozen.