Cisco Cisco Email Security Appliance X1070 Mode D'Emploi

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11-6
Cisco AsyncOS 8.5.5 for Email Security User Guide
 
Chapter 11      Content Filters
  How Content Filters Work
Attachment File Info
Filename. Does the message have an attachment with a filename that 
matches a specific pattern?
Filename contains term in content dictionary. Does the message have an 
attachment with a filename that contains any of the regular expressions or 
terms in the content dictionary named <dictionary name>?
For this option to be enabled, the dictionary must already have been 
created. See 
.
Note
The dictionary-related conditions are only available if you have 
one or more dictionaries enabled. For information about creating 
content dictionaries, see 
File type. Does the message have an attachment of a file type that matches 
a specific pattern based on its fingerprint (similar to a UNIX 
file
 
command)? 
MIME type. Does the message have an attachment of a specific MIME 
type? This rule is similar to the 
attachment-type
 rule, except only the 
MIME type given by the MIME attachment is evaluated. (The appliance 
does not try to “guess” the type of the file by its extension if there is no 
explicit type given.) 
Image Analysis. Does the message have an image attachment that matches 
the image verdict specified? Valid image analysis verdicts include: 
Suspect, Inappropriate, Suspect or Inappropriate, Unscannable, or Clean. 
Attachment is Corrupt. Does this message have an attachment that is 
corrupt? 
Note
A corrupt attachment is an attachment that the scanning engine 
cannot scan and identified as corrupt. 
Attachment Protection
Contains an attachment that is password-protected or encrypted.
(For example, use this condition to identify attachments that are potentially 
unscannable.)
Contains an attachment that is NOT password-protected or encrypted.
Table 11-2
Content Filter Conditions  (continued)
Condition
Description