Cisco Cisco Email Security Appliance C170 Betriebsanweisung

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11-3
Cisco AsyncOS 9.5 for Email User Guide
 
Chapter 11      Content Filters
  How Content Filters Work
Multiple conditions may be defined for each filter. When multiple conditions are defined, you can choose 
whether the conditions are tied together as a logical OR (“Any of the following conditions...”) or a logical 
AND (“All of the following conditions”). 
Table 11-1
Content Filter Conditions 
Condition
Description
(no conditions)
Specifying conditions in content filters is optional. If no conditions are 
specified, a 
true
 rule is implied. The 
true
 rule matches all messages, and 
the actions are always performed. 
Message Body or 
Attachments
Contains text: Does the message body contain text or an attachment that 
matches a specific pattern? 
Contains smart identifier: Does content in the message body or 
attachment match a smart identifier?
Contains term in content dictionary: Does the message body contain 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 
.
Number of matches required. Specify the number of matches required 
for the rule to evaluate to true. You can specify this threshold for text, smart 
identifiers, or content dictionary terms.
This includes delivery-status parts and associated attachments.