Use the Attachment Filter tab to define how ScanMail filters message attachments.
Trend Micro recommends blocking the following attachments on the ScanMail server:
|
Extension
|
Description
|
|
.386
|
Windows Enhanced Mode Driver or Swap File
|
|
.ACM
|
Audio Compression Manager Driver (Windows) and Windows System File
|
|
.ASP
|
Active Server Page
|
|
.AVB
|
Inoculan Anti-Virus virus infected file
|
|
.BAT
|
Batch Processing
|
|
.BIN
|
Binary File
|
|
.CLA
|
Java Class File (usually *.CLASS but can be shortened)
|
|
.CLASS
|
Java Class File
|
|
.CMD
|
OS/2, Windows NT Command File, DOS CP/M Command File, dBase II Program File
|
|
.CNV
|
MS Word Data Conversion File
|
|
.COM
|
Executable File
|
|
.CS*
|
Corel Script
|
|
.DLL
|
Dynamic Link Library
|
|
.DRV
|
Device Driver
|
|
.EXE
|
Executable File
|
|
.GMS
|
Corel Global Macro Storage
|
|
.HLP
|
Windows Help File
|
|
.HTA
|
Hypertext Application (runs applications from HTML files)
|
|
.HTM
.HTML
|
Hypertext Markup Language
|
|
.HTT
|
Hypertext Template
|
|
.INF
|
Information or Setup File
|
|
.INI
|
Initialization/Configuration file
|
|
.JS*
.JS
.JSE
|
JavaScript Source Code
|
|
.LNK
|
Linker File, Windows Shortcut File
|
|
.MHT*
|
Microsoft MHTML Document (Archived Web Page)
|
|
.MPD
|
Mini Port Driver
|
|
.OCX
|
Object Linking and Embedding (OLE) Control Extension
|
|
.OV*
|
Program Overlay File (.OVL)
|
|
.PIF
|
Windows Program Information File
|
|
.SCR
|
Screen Saver Script
|
|
.SHS
|
Shell Scrap Object File
|
|
.SYS
|
System Device Driver
|
|
.TLB
|
Remote Automation Truelib Files
|
|
.TSP
|
Windows Telephony Service Provider
|
|
.VBS
|
Visual Basic Script
|
|
.VBE
|
Visual Basic Script Encrypted
|
|
.VXD
|
Virtual Device Driver
|
|
.WBT
|
WinBatch Script
|
|
.WIZ
|
Wizard File
|
|
.WSH
|
Windows Script Host Settings File
|
To configure attachment filter options:
-
Click tab.
-
Select Enable attachment filter.
-
In the Filter Attachment by File Sizesection, select Enable attachment filtering by size to filter attachments according to file size.
Note
You can specify the file size per attachment or the total file size of all attachments in a message. Set the size limit in bytes (B), kilobytes (KB), or megabytes (MB). Select Single attachment file size or Sum of all attachments (collective total file size of all attachments). -
Select the filtering Action for Filter Attachment by File Size by choosing one of the following: Pass, Quarantine,Delete attachment,Block mail, Redirect mail for approval, or Send at a time range.
Note
When selecting Send at a time range, choose the Days of week and Time to send. -
In the Filter Attachment by File Type section, select the Enable attachment filtering by file type check box.ScanMail can open, organize, and scan the contents of more than 200 file formats—including Notes database formats, the wide variety of file types that may be attached therein.
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Specify which file type to scan: All file types, Specified, or All except specified.Selecting Specified or All except specified allows you to:
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Edit the ScanMail File Types database.
-
Type new entries or click
to select types according to true file type, true file type groups, or extension name.
Note
Be aware that Domino sometimes stores the attachment's file name within the body text of messages. A body text search will find the specified word within a file name. -
-
Select the filtering action: Pass, Quarantine, Delete attachment, Block mail, or Redirect mail for approval.
-
Select Enable attachment filtering within compressed files to instruct ScanMail to filter compressed files. By default, this option is disabled to optimize server performance.
-
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In the Exception section Allowed attachments field, type the attachment file name that will be excluded from filtering. You may use the wildcard characters (*) or (?) to specify multiple file names or extension names. Separate multiple entries with semicolons (;).The file names or extension names specified in the Allowed attachments field overrides the attachment filtering criteria.
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In the Notification section, select the notification options for when a file matches the attachment filters.
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In the Email Stamp section, define the safe email stamp settings.
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Click Save & Close.