Cisco Cisco Email Security Appliance C170 Guia Do Utilizador
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User Guide for AsyncOS 9.7 for Cisco Email Security Appliances
Chapter 9 Using Message Filters to Enforce Email Policies
Message Filter Actions
Drop Attachments
by Name
by Name
drop-attachments-by-na
me
Drop all attachments on messages that have a filename
that match the given regular expression. Archive file
attachments (zip, tar) will be dropped if they contain a file
that matches. See
that match the given regular expression. Archive file
attachments (zip, tar) will be dropped if they contain a file
that matches. See
Drop Attachments
by Type
by Type
drop-attachments-by-ty
pe
Drop all attachments on messages that have a MIME type,
determined by either the given MIME type or the file
extension. Archive file attachments (zip, tar) will be
dropped if they contain a file that matches. See
determined by either the given MIME type or the file
extension. Archive file attachments (zip, tar) will be
dropped if they contain a file that matches. See
.
Drop Attachments
by File Type
by File Type
drop-attachments-by-fi
letype
Drop all attachments on messages that match the given
“fingerprint” of the file. Archive file attachments (zip, tar)
will be dropped if they contain a file that matches. For
more information, see
“fingerprint” of the file. Archive file attachments (zip, tar)
will be dropped if they contain a file that matches. For
more information, see
.
Drop Attachments
by MIME Type
by MIME Type
drop-attachments-by-mi
metype
Drop all attachments on messages that have a given
MIME type. This action does not attempt to ascertain the
MIME type by file extension and so it also does not
examine the contents of archives. See
MIME type. This action does not attempt to ascertain the
MIME type by file extension and so it also does not
examine the contents of archives. See
.
Drop Attachments
by Size
by Size
drop-attachments-by-si
ze
Drop all attachments on the message that, in raw encoded
form, are equal to or greater than the size (in bytes) given.
Note that for archive or compressed files, this action does
not examine the uncompressed size, but rather the size of
the actual attachment prior to any decoding. See
form, are equal to or greater than the size (in bytes) given.
Note that for archive or compressed files, this action does
not examine the uncompressed size, but rather the size of
the actual attachment prior to any decoding. See
Drop Attachments
by Content
by Content
drop-attachments-where
-contains
Drop all attachments on message that contain the regular
expression. Does the pattern occur the minimum number
of times you specified for the threshold value? Archive
files (zip, tar) will be dropped if any of the files they
contain match the regular expression pattern. See
expression. Does the pattern occur the minimum number
of times you specified for the threshold value? Archive
files (zip, tar) will be dropped if any of the files they
contain match the regular expression pattern. See
The optional comment serves as the means to modify the
text used to replace the attachment that was dropped.
Attachment footers simply append to the message.
text used to replace the attachment that was dropped.
Attachment footers simply append to the message.
Drop Attachments
by Dictionary
Matches
by Dictionary
Matches
drop-attachments-where
-dictionary-match
Strip attachments based on matches to dictionary terms. If
the terms in the MIME parts considered to be an
attachment match a dictionary term (and the user-defined
threshold is met), the attachment is stripped from the
email. See
the terms in the MIME parts considered to be an
attachment match a dictionary term (and the user-defined
threshold is met), the attachment is stripped from the
email. See
Add Footer
add-footer(footer-name
)
Add disclaimer text as a footer to the message. See
“Message Disclaimer Stamping” in the “Text Resources”
chapter for more information.
“Message Disclaimer Stamping” in the “Text Resources”
chapter for more information.
Table 9-5
Message Filter Actions
Action Syntax
Description