The following file-types (email attachments) in this extension list are being blocked for delivery on all our mail servers. They all have a particular danger of executing or injecting malicious code on a system.
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- .ADE - Microsoft Access Data Project Extension file
- .ADP - Microsoft Access Data Project file
- .ASF - Microsoft Advanced Streaming Format file
- .ASX - Microsoft Windows Media Active Stream Redirector file
- .BAS - BASIC Language Source file
- .BAT - Microsoft DOS Batch Processing file
- .BIN - Binary file
- .CHM - Microsoft Compiled HTML Help file
- .CMD - Microsoft Windows NT Command Script file
- .COM - Microsoft DOS Command Application file
- .CPL - Microsoft Windows Control Panel Extension file
- .CRT - Security Certificate file
- .CSH - C Shell Script file
- .DBX - Microsoft Outlook Express E-mail Folder file
- .DLL - Dynamic Link Library file
- .DOCM - Microsoft Word Document file, macro-enabled Open XML format
- .DOTM - Microsoft Word Template file, macro-enabled Open XML format
- .EXE - Executable Application file
- .FXP - Microsoft Visual FoxPro Compiled Program file
- .HIV - Microsoft Windows Registry Hive file
- .HLP - Microsoft Windows Help file
- .HTA - Hypertext Markup Language Application file
- .HTB - HTTP Browser Database file
- .HTM - Hypertext Markup Language file
- .HTML - Hypertext Markup Language file
- .INF - Information Setup file
- .INS - Microsoft Internet Communication Settings file
- .ISP - Microsoft Internet Service Provider Settings file
- .JS - JavaScript / JScript Script file
- .JSE - JScript Encoded Script file
- .KSH - Korn Shell Script file
- .LNK - Microsoft Windows Shortcut Link file
- .MDA - Microsoft Access Add-in file
- .MDB - Microsoft Access Database file
- .MDE - Microsoft Access Encoded Database file
- .MDT - Microsoft Access Database Template file
- .MDW - Microsoft Access Database Wokgroup file
- .MDZ - Microsoft Access Wizard Template file
- .MHT - Multipurpose Internet Mail Extension HTML file
- .MSC - Microsoft Management Console Snap-in Control file
- .MSH - Microsoft Shell Script file
- .MSI - Microsoft Windows Installer Package file
- .MSP - Microsoft Windows Installer Patch file
- .MST - Microsoft Test file
- .NCH - Microsoft Outlook Express Folder file
- .OBJ - Microsoft Object Code file
- .OCX - Microsoft ActiveX Control file
- .OFT - Microsoft Outlook Item Template file
- .OPS - Microsoft Office Profile Settings file
- .OVL - Overlay file
- .PCD - Photo CD Image file
- .PIF - Program Information File
- .PL - Perl Program file
- .POTM - Microsoft PowerPoint Template file, macro-enabled Open XML format
- .PPA - Microsoft PowerPoint Add-in file
- .PPAM - Microsoft PowerPoint Add-in file, macro-enabled Open XML format
- .PPSM - Microsoft PowerPoint Slideshow file, macro-enabled Open XML format
- .PPTM - Microsoft PowerPoint Presentation file, macro-enabled Open XML format
- .PRF - Microsoft Outlook Profile Settings file
- .PS1 - Microsoft PowerShell Script file
- .REG - Registry Data file
- .SCF - Microsoft Windows Explorer Shell Command File file
- .SCR - Screen Saver file
- .SCT - Windows Script Component file
- .SH - Shell Script file
- .SHB - Shell Shortcut Back Into A Document file
- .SHS - Shell Scrap object file
- .SYS - System file
- .URL - Uniform Resource Locator file
- .VB - Microsoft Visual Basic file
- .VBE - Microsoft VBScript Encoded Script file
- .VBS - Microsoft VBScript Script file
- .VSS - Microsoft Visio Stencil file
- .VST - Microsoft Visio Template file
- .VXD - Virtual Device Driver file
- .WMD - Microsoft Windows Media Download file
- .WMS - Microsoft Windows Media Skin file
- .WMV - Microsoft Windows Media Video file
- .WMZ - Microsoft Windows Media Compressed Skin file
- .WSC - Microsoft Windows Script Component file
- .WSF - Microsoft Windows Script file
- .WSH - Microsoft Windows Script Host Settings file
- .XLA - Microsoft Excel Add-in
- .XLAM - Microsoft Excel Add-in, macro-enabled Open XML format
- .XLSM - Microsoft Excel Spreadsheet/Workbook file, macro-enabled Open XML format
- .XLTM - Microsoft Excel Template file, macro-enabled Open XML format template