User Guide

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AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide
Chapter 34 Managing and Monitoring Using the CLI
Managing the Email Queue
Note The “delivery suspend” state is preserved across system reboots. If you use the suspenddel command
and then reboot the appliance, you must resume delivery after the reboot using the resumedel command.
Example
Resuming Email Delivery
The resumedel command returns Cisco AsyncOS to normal operating state after using the suspenddel
command.
Syntax
resumedel
Suspending Receiving Email
To temporarily suspend all listeners from receiving email, use the suspendlistener command. While
receiving is suspended, the system does not accept connections to the specific port of the listener.
This behavior has changed in this release of AsyncOS. In previous releases, the system would accept
connections, respond with the following responses and disconnect:
• SMTP: 421 hostname Service not available, closing transaction channel
• QMQP: ZService not available
Note The “receiving suspend” state is preserved across system reboots. If you use the suspendlistener
command and then reboot the appliance, you must use the
resumelistener command before the listener
will resume receiving messages.
mail3.example.com> suspenddel
Enter the number of seconds to wait before abruptly closing connections.
[30]>
Waiting for outgoing deliveries to finish...
Mail delivery suspended.
mail3.example.com> resumedel
Mail delivery resumed.