The Attachment is
true file typecriteria allows you to create policy rules that take actions on messages based on the true file type of attachments a message contains.
NoteWhere the Attachment is
file name or extensioncriteria makes decisions based on just file names and/or extensions, the Attachment is true file typecriteria scans the headers of the files themselves for the identifying signatures. |
Procedure
- On the Scanning Criteria tab, click Advanced.
- Select the Attachment is
true file type
criteria. - Click the
true file type
link.The Attachment True File Type screen appears. - From the drop-down list, select Selected true file types or Not selected true file types.
- Select the true file types for Trend Micro Email
Security to
match on.
Note
-
For Microsoft Office files of version 2007 or later, Trend Micro Email Security supports attachment true file type detection only when the files are not encrypted.
-
The Compressed file type of other includes only the following file types:
ar
,arc
,amg
,lzw
,cab
,lha
,pklite
,diet
,lzh
, andlz
.
-