Cisco Cisco Email Security Appliance C170 用户指南

Scroll to the bottom of the page and click Accept to accept the agreement.

A page similar to 

 is displayed.

Click Edit Global Settings.

Check the box next to Enable IronPort Anti-Spam scanning. 

Checking this box enables the feature globally for the appliance. However, 
you must still enable per-recipient settings in Mail Policies. For more 
information, see 

Choose a value for the maximum message size to scan by IronPort Anti-Spam.

The default value is 128 Kb. Messages larger than this size will not be 
scanned by IronPort Anti-Spam and the 

X-IronPort-Anti-Spam-Filtered: 

true

 header will not be added to the message.

Enter the number of seconds to wait for timeout when scanning a message.

When specifying the number of seconds, enter an integer from 1 to 120. The 
default value is 60 seconds.

Enable or disable regional scanning. Regional scanning optimizes IronPort 
Anti-Spam scanning for a particular region. Because this feature optimizes the 
anti-spam engine for a particular region, it can reduce capture rates for other types 
of spam. Therefore, IronPort recommends you enable this feature only if you 
receive the bulk of your email from the specified region. For more information 
about regional scanning, see 

Submit and commit your changes. 

The Security Services > IronPort Anti-Spam page is refreshed to display the 
values you chose in the previous steps.