Cisco Cisco Email Security Appliance C160 Mode D'Emploi

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User Guide for AsyncOS 9.8 for Cisco Email Security Appliances
 
Chapter 22      Text Resources
  Content Dictionaries
Text Resources
Text resources are text objects, such as disclaimers, notification templates, and anti-virus templates. You 
can create new objects for use in various components of AsyncOS. You can import and export text 
resources. 
Message Disclaimer Stamping
Message disclaimer stamping allows you to add a disclaimer text resource to messages. For example, 
you could append a copyright statement, promotional message, or disclaimer to every message sent from 
within your enterprise.
Content Dictionaries
Content dictionaries are groups of words or entries that work in conjunction with the Body Scanning 
feature on the appliance and are available to both content and message filters. Use the dictionaries you 
define to scan messages, message headers, and message attachments for terms included in the dictionary 
in order to take appropriate action in accordance with your corporate policies. For example, you could 
create a list of confidential or profane words, and, using a filter rule to scan messages that contain words 
in the list, drop, archive, or quarantine the message.
The AsyncOS operating system includes the ability to define a total of 100 content dictionaries using the 
GUI (Mail Policies > Dictionaries) or the CLI’s 
dictionaryconfig
 command. You can create, delete, 
and view dictionaries; add and delete entries from a dictionary; and import and export entire dictionaries.
Note that, for efficient processing, the following content dictionary entries are treated as words:
Entries containing only alphanumeric characters
Email addresses containing the following characters: 0-9, A-Z, a-z, dot, underscore, hyphen, and at 
symbol
Domain names containing the following characters: 0-9, A-Z, a-z, dot, underscore, hyphen, and at 
symbol
If you want the appliance to treat such a word as a regular expression, enclose the word in parenthesis, 
for example, 
(user@example.com)
.
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