You want to change IP address of the Inbound and / or Outbound interface on Symantec Messaging Gateway.
After a few moments the following message will display: (Perform the instructions noted in this message.)
The Control Center is being assigned a new IP address. This may take several minutes. The process is complete when you can access the Control Center in your browser using the new IP address. After that, log into the command line interface and restart the Control Center by typing
service controlcenter restart. If you are already connected via ssh then do not expect the message of the controlcenter restarted since the destination IP is unreachable due to the change of IP configuration. You migh ping the old and new IP to see which one is up. Then close ssh client and the browser to log in to the Control Center using the new IP address.
If the IP address of the Control Center is changed, log into each of the scanners via command-line interface to update the agent trusted IP list by running the following:
agent-config --add <IP address of new control center>
No further configuration of SMG is required. Other devices may need to be reconfigured in your network, such as switches, routers, and/or firewalls.
If your setup is involving changing a subnet and more than one hosts, eg. control center + scanner and another scanner, we recommend to do it slightly differently.
agent-config --add <new IP address of a host>I the current version of the SMG is 10.8.1 you have to restart agent service after adding new IP address
service agent restart
The last step would be to remove the old interfaces from the NIC and to delete the old IP addresses from the agent service configuration on all of the hosts.
agent-config --delete <old IP address>