Cisco Cisco Email Security Appliance C390 사용자 가이드

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 

 Service not available, closing transaction 

channel

QMQP: 

ZService not available

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.

suspendlistener

mail3.example.com> suspendlistener

Choose the listener(s) you wish to suspend.

Separate multiple entries with commas.

1. All

2. InboundMail

3. OutboundMail

[1]> 1

Enter the number of seconds to wait before abruptly closing connections.

[30]>

Waiting for listeners to exit...