Cisco Cisco Email Security Appliance C170 Guía Del Usuario
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Cisco AsyncOS 9.5 for Email User Guide
Chapter 9 Using Message Filters to Enforce Email Policies
Attachment Scanning
Step 9
Submit and commit your changes.
Notifications
Using the Text Resources page in the GUI or the
textconfig
CLI command to configure custom
notification templates as text resources is another useful tool when used in conjunction with attachment
filtering rules. The notification template supports non-ASCII characters (you are prompted to choose an
encoding while creating the template).
filtering rules. The notification template supports non-ASCII characters (you are prompted to choose an
encoding while creating the template).
In the following example, the
textconfig
command was first used to create a notification template
named
strip.mp3
that will be inserted into to the body of the notification message. Then, an attachment
filtering rule is created so that when an .mp3 file has been stripped from a message, a notification email
is sent to the intended recipients explaining that the .mp3 file has been deleted.
is sent to the intended recipients explaining that the .mp3 file has been deleted.
For more information, see
.
Examples of Attachment Scanning Message Filters
The following examples shows actions performed on attachments:
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Inserting Headers
In these examples, AsyncOS inserts headers when the attachments contain specified content.
In the following example, all of the attachments on the message are scanned for a keyword. If the
keyword is present in all of the attachments, a custom X-Header is inserted:
keyword is present in all of the attachments, a custom X-Header is inserted:
drop-mp3s:
if (attachment-type == '*/mp3')
{ drop-attachments-by-filetype('Media');
notify ('$EnvelopeRecipients', 'Your mp3 has been removed', '$EnvelopeFrom',
'strip.mp3');
}
attach_disclaim:
if (every-attachment-contains('[dD]isclaimer') ) {