Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

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11-14
Cisco AsyncOS 9.1 for Email User Guide
 
Chapter 11      Content Filters
  How Content Filters Work
Action Variables
Headers added to messages processed by content filters can contain variables that will be automatically 
replaced with information from the original message when the action is executed. These special variables 
are called action variables. Your appliance supports the following set of action variables:
Encrypt and Deliver Now 
(Final Action)
Encrypts and delivers the message, skipping any further processing.
Encryption rule: Always encrypts the message or only encrypts it if an 
attempt to send it over a TLS connection first fails. See 
 for more information.
Encryption Profile. Encrypts the message using the specified encryption 
profile, then delivers the message. This action is for use with a Cisco 
Encryption Appliance or a hosted key service.
Subject. Subject for the encrypted message. By default, the value is 
$Subject
.
S/MIME Sign/Encrypt 
(Final Action)
Performs an S/MIME signing or encryption and delivers the message, 
skipping any further processing.
S/MIME Sending Profile: Performs an S/MIME signing or encryption 
using the specified S/MIME sending profile. See 
.
Bounce (Final Action)
Sends the message back to the sender.
Skip Remaining Content 
Filters (Final Action)
Delivers the message to the next stage of processing, skipping any further 
content filters. Depending on configuration, this may mean deliver the 
message to recipient(s), quarantine, or begin Outbreak Filters scanning.
Drop (Final Action)
Drops and discards the message.
Table 11-2
Content Filter Actions  (continued)
Action
Description
Table 11-3
Action Variables
Variable
Syntax
Description
All Headers
$AllHeaders
Replaced by the message headers.
Body Size
$BodySize
Replaced by the size, in bytes, of the 
message.
Date
$Date
Replaced by the current date, using the 
format MM/DD/YYYY.
Dropped File Name
$dropped_filename
Returns only the most recently dropped 
filename. 
Dropped File Names
$dropped_filenames
Same as 
$filenames
, but displays list of 
dropped files.
Dropped File Types
$dropped_filetypes
Same as 
$filetypes
, but displays list of 
dropped file types.