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Enable Outbreak Filters globally.

Enable Adaptive Rules scanning.

Set a maximum size for files to scan (note that you are entering the size in bytes)

Elect whether to enable alerts for the Outbreak Filter. 

Note that alerts and Adaptive Rules are not enabled by default. This functionality is also available via 
the 

outbreakconfig

 CLI command (see the Cisco AsyncOS CLI Reference Guide). After you make your 

changes, submit and commit them.

To enable the Outbreak Filters feature globally, check the box next to Enable Outbreak Filters on the 
Outbreak Filters Global Settings page, and click Submit. You must have agreed to the Outbreak Filters 
license agreement first.

Once enabled globally, the Outbreak Filters feature can then be enabled or disabled individually for each 
incoming and outgoing mail policy, including the default policies. For more information, see 

The Outbreak Filters feature uses the Context Adaptive Scanning Engine (CASE) to detect viral threats, 
regardless of whether anti-spam scanning is enabled, but you do need to have Anti-Spam or Intelligent 
Multi-Scan enabled globally on the aplliance in order to scan for non-viral threats.

If you have not already agreed to the license during system setup (see 

), you 

must click Enable on the Security Services > Outbreak Filters page, and then read and agree to the 
license.

Adaptive Scanning enables the use of Adaptive Rules in Outbreak Filters. A set of factors or traits (file 
size, etc.) are used to determine the likelihood of a message being part of an outbreak when no virus 
signature or spam criteria relating to the message’s content is available. To enable Adaptive Scanning, 
check the box next to Enable Adaptive Rules on the Outbreak Filters Global Settings page, and click 
Submit.

Check the box labeled “Emailed Alerts” to enable alerting for the Outbreak Filters feature. Enabling 
emailed alerts for Outbreak Filters merely enables the alerting engine to send alerts regarding Outbreak 
Filters. Specifying which alerts are sent and to which email addresses is configured via the Alerts page 
in the System Administration tab. For more information on configuring alerts for Outbreak Filters, see 

Outbreak Rules are published by the Cisco Security Intelligence Operations and your appliance checks 
for and downloads new outbreak rules every 5 minutes. You can change this update interval. See 

 for more information.