Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

The following example inserts a message tag into a message with “[Encrypt]” in the subject. You can 
then create a DLP policy that will encrypt messages with this message tag before delivering them if 
Cisco IronPort Email Encryption is available:

The 

log-entry

 action inserts customized text into the IronPort Text Mail logs at the 

INFO

 level. The text 

can include action variables. You can use this action to insert useful text for debugging purposes and 
information on why a message filter performed a certain action. The log entry also appears in message 
tracking. 

The following example inserts a log entry explaining that message was bounced because it possibly 
contained confidential company information: 

AsyncOS can strip attachments from messages that are inconsistent with your corporate policies, while 
still retaining the ability to deliver the original message. 

You can filter attachments based on their specific file type, fingerprint, or based on the content of the 
attachment. Using the fingerprint to determine the exact type of attachment prevents users from 
renaming a malicious attachment extension (for example, 

.exe

) to a more commonly used extension (for 

example, 

.doc

) in the hope that the renamed file would bypass attachment filters.

When you scan attachments for content, the Stellent attachment scanning engine extracts data from 
attachment files to search for the regular expression. It examines both data and metadata in the 
attachment file. If you scan an Excel or Word document, the attachment scanning engine can also detect 
the following types of embedded files: .exe, .dll, .bmp, .tiff, .pcx, .gif, .jpeg, .png, and Photoshop images.

Tag_Message:

   if (subject == '^\\[Encrypt\\]') 

   {

        tag-message('Encrypt-And-Deliver');

   }

CompanyConfidential:

   if (body-contains('Company Confidential')) 

   {

        log-entry('Message may have contained confidential information.');

        bounce();

   }