Cisco Cisco Email Security Appliance X1070 ユーザーガイド
11-5
Cisco AsyncOS 8.5.5 for Email Security User Guide
Chapter 11 Content Filters
How Content Filters Work
Attachment Content
Contains text. Does the message contain an attachment that contains text
or another attachment that matches a specific pattern? This rule is similar
to the
or another attachment that matches a specific pattern? This rule is similar
to the
body-contains()
rule, but it attempts to avoid scanning the entire
“body” of the message. That is, it attempts to scan only that which the user
would view as being an attachment.
would view as being an attachment.
Contains a smart identifier. Does content in the message attachment
match the specified smart identifier?
match the specified smart identifier?
Contains terms in content dictionary. Does the attachment contain any
of the regular expressions or terms in the content dictionary named
<dictionary name>?
of the regular expressions or terms in the content dictionary named
<dictionary name>?
To search for dictionary terms, the dictionary must already have been
created. See
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
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
identifier, or content dictionary matches.
for the rule to evaluate to true. You can specify this threshold for text, smart
identifier, or content dictionary matches.
Table 11-2
Content Filter Conditions (continued)
Condition
Description