Cisco Cisco Email Security Appliance X1070 用户指南
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AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide
Chapter 9 Using Message Filters to Enforce Email Policies
Configuring Scan Behavior
Step 3
Configure the global settings. Do the following:
a.
Under Global Settings, click Edit Global Settings.
b.
Edit the desired fields:
c.
Click Submit.
Step 4
Click Commit Changes.
Related Topics
•
Modifying Scan Parameters using CLI
You can use the
scanconfig
command to configure the behavior of body and attachment scanning. In
the following example, the
scanconfig
command sets the following parameters:
•
MIME types of
video/*
,
audio/*
,
image/*
are not scanned for content.
•
Nested (recursive) archive attachments up to 50 levels are scanned.
•
The maximum size for attachments to be scanned is 25 megabytes; anything larger will be skipped.
(The default is 5 megabytes.)
(The default is 5 megabytes.)
Table 9-11
Field
Description
Action for attachments with MIME
types / fingerprints in table above
types / fingerprints in table above
Choose whether to scan or skip attachments types
defined in the attachment type mapping.
defined in the attachment type mapping.
Maximum depth of attachment
recursion to scan
recursion to scan
Specify the level up to which the recursive
attachments are to be scanned.
attachments are to be scanned.
Maximum attachment size to scan
Specify the maximum size of attachments to scan.
Attachment Metadata scan
Specify whether to scan or skip metadata of the
attachments.
attachments.
Attachment scanning timeout
Specify the scanning time-out period.
Assume attachment matches
pattern if not scanned for any
reason
pattern if not scanned for any
reason
Specify whether to consider unscanned
attachments as match to the search pattern.
attachments as match to the search pattern.
Action when message cannot be
deconstructed to remove specified
attachments
deconstructed to remove specified
attachments
Specify the action to be taken when a message
could not be deconstructed to remove specified
attachments.
could not be deconstructed to remove specified
attachments.
Bypass all filters in case of a content
or message filter error
or message filter error
Specify whether to bypass all filters in case of a
content or message filter error.
content or message filter error.
Encoding to use when none is
specified
specified
Specify the encoding to be used if no encoding is
specified.
specified.
Convert opaque-signed messages to
clear-signed (S/MIME unpacking)
clear-signed (S/MIME unpacking)
Specify whether to convert opaque-signed
messages to clear-signed (S/MIME unpacking).
messages to clear-signed (S/MIME unpacking).