There are two levels of attachment security. Access to Level 1 files is blocked and can't be changed. When you receive an attachment with a Level 2 file type, you will be prompted to save the file to your hard disk. If you use Microsoft Exchange Server, your system administrator can add and remove file types for both levels of e-mail security. If a file type is added to both levels, it will be treated as a Level 1 file type.
| File extension |
File type |
| ade
|
Access Project Extension (Microsoft)
|
| adp
|
Access Project (Microsoft)
|
| app
| Executable Application
|
| asp
|
Active Server Page
|
| bas
|
BASIC Source Code
|
| bat
|
Batch Processing
|
| cer
|
Internet Security Certificate File
|
| chm
|
Compiled HTML Help
|
| cmd
|
DOS CP/M Command File, Command File for Windows NT
|
| com
|
Command
|
| cpl
| Windows Control Panel Extension (Microsoft)
|
| crt
|
Certificate File
|
| csh
| csh Script
|
| exe
|
Executable File
|
| fxp
|
FoxPro Compiled Source (Microsoft)
|
| gadget | Windows Vista gadget |
| hlp
|
Windows Help File
|
| hta
|
Hypertext Application
|
| inf
|
Information or Setup File
|
| ins
|
IIS Internet Communications Settings (Microsoft)
|
| isp
|
IIS Internet Service Provider Settings (Microsoft)
|
| its
| Internet Document Set, Internet Translation
|
| js
|
JavaScript Source Code
|
| jse
|
JScript Encoded Script File
|
| ksh
|
UNIX Shell Script
|
| lnk
|
Windows Shortcut File
|
| mad
|
Access Module Shortcut (Microsoft)
|
| maf
|
Access (Microsoft)
|
| mag
|
Access Diagram Shortcut (Microsoft)
|
| mam
|
Access Macro Shortcut (Microsoft)
|
| maq
|
Access Query Shortcut (Microsoft)
|
| mar
|
Access Report Shortcut (Microsoft)
|
| mas
|
Access Stored Procedures (Microsoft)
|
| mat
| Access Table Shortcut (Microsoft)
|
| mau
|
|
| mav
|
Access View Shortcut (Microsoft)
|
| maw
|
Access Data Access Page (Microsoft)
|
| mda
| Access Add-in (Microsoft), MDA Access 2 Workgroup (Microsoft)
|
| mdb
|
Access Application (Microsoft), MDB Access Database (Microsoft)
|
| mde
|
Access MDE Database File (Microsoft)
|
| mdt
|
Access Add-in Data (Microsoft)
|
| mdw
|
Access Workgroup Information (Microsoft)
|
| mdz
|
Access Wizard Template (Microsoft)
|
| msc
|
Microsoft Management Console Snap-in Control File (Microsoft)
|
| msi
|
Windows Installer File (Microsoft)
|
| msp
|
Windows Installer Patch
|
| mst
|
Windows SDK Setup Transform Script
|
| ops
|
Office Profile Settings File
|
| pcd
|
Visual Test (Microsoft)
|
| pif
|
Windows Program Information File (Microsoft)
|
| prf
|
Windows System File
|
| prg
| Program File
|
| pst
| MS Exchange Address Book File, Outlook Personal Folder File (Microsoft)
|
| reg
| Registration Information/Key for W95/98, Registry Data File
|
| scf
| Windows Explorer Command
|
| scr
| Windows Screen Saver
|
| sct
| Windows Script Component, Foxpro Screen (Microsoft)
|
| shb
| Windows Shortcut into a Document
|
| shs
| Shell Scrap Object File
|
| tmp
| Temporary File/Folder
|
| url
| Internet Location
|
| vb
| VBScript File or Any VisualBasic Source
|
| vbe
| VBScript Encoded Script File
|
| vbs
| VBScript Script File, Visual Basic for Applications Script
|
| vsmacros
| Visual Studio .NET Binary-based Macro Project (Microsoft)
|
| vss
| Visio Stencil (Microsoft)
|
| vst
| Visio Template (Microsoft)
|
| vsw
| Visio Workspace File (Microsoft)
|
| ws
| Windows Script File
|
| wsc
| Windows Script Component
|
| wsf
| Windows Script File
|
| wsh
| Windows Script Host Settings File
|
| |
There are no Level 2 files by default. If you use Microsoft Exchange Server, your system administrator may add and remove Level 2 file types, or allow you to reduce a Level 1 file to Level 2.
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