Cisco Cisco Email Security Appliance C170 Guía Del Usuario
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Cisco IronPort AsyncOS 7.5 for Email Advanced Configuration Guide
OL-25137-01
Chapter 6 Using Message Filters to Enforce Email Policies
Modifying Scanning Parameters
The
scanconfig
command controls the behavior of body and attachment
scanning, such as which types should be skipped when scanning.
Note
If you want to scan a MIME type that may be included in a zip or compressed file,
you must include list 'compressed' or 'zip' or 'application/zip' in the scan list.
you must include list 'compressed' or 'zip' or 'application/zip' in the scan list.
Using scanconfig
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 10 levels are scanned. (The
default is 5 levels.)
default is 5 levels.)
•
The maximum size for attachments to be scanned is 25 megabytes; anything
larger will be skipped. (The default is 5 megabytes.)
larger will be skipped. (The default is 5 megabytes.)
•
The attachment is enabled for metadata scanning. When the scanning engine
scans attachments, it scans the metadata for the regular expression. This is the
default setting.
scans attachments, it scans the metadata for the regular expression. This is the
default setting.
•
The attachment timeout scanning is configured for 60 seconds. The default is
30 seconds.
30 seconds.
•
Attachments that were not scanned are assumed to not match the search
pattern. (This is the default behavior.)
pattern. (This is the default behavior.)
•
The
application/(x-)pkcs7-mime
(opaque-signed) parts of a message are
converted to
multipart/signed
(clear-signed) to provide the message’s
content for processing. The default is not to convert opaque-signed messages.
Enter "EDIT" to modify or press Enter to go back.
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