Cisco Cisco Email Security Appliance C160 Mode D'Emploi

See 

 for more information.

The IronPort appliance is configured to connect directly to IronPort’s update 
servers to receive anti-spam rules updates. This connection is made by HTTP on 
port 80 and the content is encrypted. If you do not want to open this port in your 
firewall, you can define a proxy server and specific port from which the appliance 
can receive updated rules.

If you choose to use a proxy server, you can specify an optional authentication and 
port.

IronPort Anti-Spam and IronPort Intelligent Multi-Scan will automatically use a 
proxy server if one has been defined. There is no way to turn off the proxy server 
for the anti-spam solution without disabling it for all other service updates (Virus 
Outbreak Filters, Sophos Anti-Virus, etc.).

If you define a proxy server, it will be used for all service updates that are 
configured to use a proxy server, automatically.

For more information about defining a proxy server, see 

Once you have accepted the license agreement, the most recent IronPort 
Anti-Spam and IronPort Intelligent Multi-Scan rules updates are listed on the 
their corresponding page in the Security Services menu (GUI) and in the 

antispamstatus

 command (CLI). 

If the update has not occurred, or a server has not been configured, the string 
“Never Updated” is displayed.