Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

Submit and commit your changes. 

 

Cisco Intelligent Multi-Scan incorporates multiple anti-spam scanning engines, including Cisco 
Anti-Spam, to provide a multi-layer anti-spam solution. 

When processed by Cisco Intelligent Multi-Scan: 

A message is first scanned by third-party anti-spam engines. 

Cisco Intelligent Multi-Scan then passes the message and the verdicts of the third-party engines to 
Cisco Anti-Spam, which assumes responsibility for the final verdict. 

After Cisco Anti-Spam performs its scan, it returns a combined multi-scan score to AsyncOS. 

Combining the benefits of the third-party scanning engines and Cisco Anti-Spam results in more 
caught spam while maintaining Cisco Anti-Spam’s low false positive rate. 

You cannot configure the order of the scanning engines used in Cisco Intelligent Multi-Scan; Cisco 
Anti-Spam will always be the last to scan a message and Cisco Intelligent Multi-Scan will not skip it if 
a third-party engine determines that a message is spam.

Using Cisco Intelligent Multi-Scan can lead to reduced system throughput. Please contact your Cisco 
support representative for more information.

The Intelligent Multi-Scan feature key also enables Cisco Anti-Spam on the appliance, giving you the 
option of enabling either Cisco Intelligent MultiScan or Cisco Anti-Spam for a mail policy.

 

Timeout for 
Scanning 
Single 
Message

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

Enter an integer from 1 to 120. The default value is 60 seconds.

Regional 
Scanning

Enable or disable regional scanning and if applicable, select a region. 

Enable this feature only if you receive the bulk of your email from the specified 
region. Because this feature optimizes the anti-spam engine for a particular region, it 
can reduce capture rates for other types of spam.