Email Protection Administrator Guide
Define an Attachment Filter
November 2012
Proprietary: Not for use or disclosure outside McAfee without written permission
63
•
The email action that will be used if an email violates any of the file type attachment
policies
To create a new policy content filter, perform the following steps:
1
Click
Email Protection | Policies
.
2
Select the policy you want to change.
3
Click
Attachments
.
The Attachments: File Types window is displayed.
4
For each file type in the
Allowed Attachment Types
section, select one of the
following options from the drop-down menu:
•
Disallow
— All email containing this file type are blocked.
•
A file size, such that an email with a file of this file type that exceeds the file size
is blocked.
— Max 500 KB
— Max 1 MB
— 2 MB
— 5 MB
— 10 MB
— 15 MB
•
Any size
— Email with this file type is allowed and delivered.
Note:
By default, each listed attachment file type is allowed unless you specifically
select it to be disallowed, except for the types
Executables
and
Scripts
. These two
file types are relatively easy to self-invoke from an email, and thus increase the
security risk of a self-running virus or worm.
The following table lists the file extensions associated with each file type:
File Type
Example File Extensions
Microsoft Word
Documents
*.doc, *.dot, *.rtf, *.wiz