Zimbra Collaboration Suite 7.0
Zimbra Collaboration Suite 7.0
Administrator's Guide
Open Source Edition

Monitoring Zimbra Servers > Flushing the Queues

Flushing the Queues
In addition to moving individual messages in a specific queue, you can flush the server. When you click Flush on the Mail Queue toolbar, delivery is immediately attempted for all messages in the Deferred, Incoming and Active queues.