Cisco Cisco Email Security Appliance C160 Guía Del Usuario
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Cisco AsyncOS 8.5 for Email User Guide
Chapter 9 Using Message Filters to Enforce Email Policies
Message Filter Actions
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.
Add Heading
add-heading(heading-na
me)
Add disclaimer text as a heading 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.
Encrypt on
Delivery
Delivery
encrypt-deferred
Encrypt message on delivery, which means that the
message continues to the next stage of processing, and
when all processing is complete, the message is encrypted
and delivered.
message continues to the next stage of processing, and
when all processing is complete, the message is encrypted
and delivered.
Add Message Tag
tag-message(tag-name)
Add a custom term into the message to use with RSA
Email DLP policy filtering. You can configure a RSA
Email DLP policy to limit scanning to messages with the
message tag. The message tag is not visible to recipients.
See
Email DLP policy filtering. You can configure a RSA
Email DLP policy to limit scanning to messages with the
message tag. The message tag is not visible to recipients.
See
and the “Data
Loss Prevention” chapter.
Table 9-5
Message Filter Actions
Action Syntax
Description