Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

quarantine, or bounce unwanted marketing message. You also have the option to 
tag unwanted marketing messages by adding text to the message’s subject to 
identify it as marketing.

If IronPort Anti-Spam scanning or Intelligent Multi-Scan is enabled for a mail 
policy, each message that passes through that policy will have the following 
header added to the message: 

A second header will also be inserted for each message filtered by IronPort 
Anti-Spam or Intelligent Multi-Scan. This header contains information that 
allows Cisco IronPort Support to identify the CASE rules and engine version used 
to scan the message:

IronPort Intelligent Multi-Scan also adds headers from the third-party anti-spam 
scanning engines.

In addition, using the Email Security Manager feature, you can define an 
additional custom header to be added to all messages for a given policy that are 
positively identified as spam, suspected to be spam, or identified as unwanted 
marketing mail. (See 

.) 

You can also create message filters that use the 

skip-spamcheck

 action so that 

certain messages skip IronPort Anti-Spam scanning. For more information, refer 
to “Bypass Anti-Spam System Action” in “Using Message Filters to Enforce 
Email Policies,” of the Cisco IronPort AsyncOS for Email Advanced 
Configuration Guide. 

X-IronPort-Anti-Spam-Filtered: true

X-IronPort-Anti-Spam: result