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Dangerous Attachments

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.

  1. .ADE - Microsoft Access Data Project Extension file
  2. .ADP - Microsoft Access Data Project file
  3. .ASF - Microsoft Advanced Streaming Format file
  4. .ASX - Microsoft Windows Media Active Stream Redirector file
  5. .BAS - BASIC Language Source file
  6. .BAT - Microsoft DOS Batch Processing file
  7. .BIN - Binary file
  8. .CHM - Microsoft Compiled HTML Help file
  9. .CMD - Microsoft Windows NT Command Script file
  10. .COM - Microsoft DOS Command Application file
  11. .CPL - Microsoft Windows Control Panel Extension file
  12. .CRT - Security Certificate file
  13. .CSH - C Shell Script file
  14. .DBX - Microsoft Outlook Express E-mail Folder file
  15. .DLL - Dynamic Link Library file
  16. .DOCM - Microsoft Word Document file, macro-enabled Open XML format
  17. .DOTM - Microsoft Word Template file, macro-enabled Open XML format
  18. .EXE - Executable Application file
  19. .FXP - Microsoft Visual FoxPro Compiled Program file
  20. .HIV - Microsoft Windows Registry Hive file
  21. .HLP - Microsoft Windows Help file
  22. .HTA - Hypertext Markup Language Application file
  23. .HTB - HTTP Browser Database file
  24. .HTM - Hypertext Markup Language file
  25. .HTML - Hypertext Markup Language file
  26. .INF - Information Setup file
  27. .INS - Microsoft Internet Communication Settings file
  28. .ISP - Microsoft Internet Service Provider Settings file
  29. .JS - JavaScript / JScript Script file
  30. .JSE - JScript Encoded Script file
  31. .KSH - Korn Shell Script file
  32. .LNK - Microsoft Windows Shortcut Link file
  33. .MDA - Microsoft Access Add-in file
  34. .MDB - Microsoft Access Database file
  35. .MDE - Microsoft Access Encoded Database file
  36. .MDT - Microsoft Access Database Template file
  37. .MDW - Microsoft Access Database Wokgroup file
  38. .MDZ - Microsoft Access Wizard Template file
  39. .MHT - Multipurpose Internet Mail Extension HTML file
  40. .MSC - Microsoft Management Console Snap-in Control file
  41. .MSH - Microsoft Shell Script file
  42. .MSI - Microsoft Windows Installer Package file
  43. .MSP - Microsoft Windows Installer Patch file
  44. .MST - Microsoft Test file
  45. .NCH - Microsoft Outlook Express Folder file
  46. .OBJ - Microsoft Object Code file
  47. .OCX - Microsoft ActiveX Control file
  48. .OFT - Microsoft Outlook Item Template file
  49. .OPS - Microsoft Office Profile Settings file
  50. .OVL - Overlay file
  51. .PCD - Photo CD Image file
  52. .PIF - Program Information File
  53. .PL - Perl Program file
  54. .POTM - Microsoft PowerPoint Template file, macro-enabled Open XML format
  55. .PPA - Microsoft PowerPoint Add-in file
  56. .PPAM - Microsoft PowerPoint Add-in file, macro-enabled Open XML format
  57. .PPSM - Microsoft PowerPoint Slideshow file, macro-enabled Open XML format
  58. .PPTM - Microsoft PowerPoint Presentation file, macro-enabled Open XML format
  59. .PRF - Microsoft Outlook Profile Settings file
  60. .PS1 - Microsoft PowerShell Script file
  61. .REG - Registry Data file
  62. .SCF - Microsoft Windows Explorer Shell Command File file
  63. .SCR - Screen Saver file
  64. .SCT - Windows Script Component file
  65. .SH - Shell Script file
  66. .SHB - Shell Shortcut Back Into A Document file
  67. .SHS - Shell Scrap object file
  68. .SYS - System file
  69. .URL - Uniform Resource Locator file
  70. .VB - Microsoft Visual Basic file
  71. .VBE - Microsoft VBScript Encoded Script file
  72. .VBS - Microsoft VBScript Script file
  73. .VSS - Microsoft Visio Stencil file
  74. .VST - Microsoft Visio Template file
  75. .VXD - Virtual Device Driver file
  76. .WMD - Microsoft Windows Media Download file
  77. .WMS - Microsoft Windows Media Skin file
  78. .WMV - Microsoft Windows Media Video file
  79. .WMZ - Microsoft Windows Media Compressed Skin file
  80. .WSC - Microsoft Windows Script Component file
  81. .WSF - Microsoft Windows Script file
  82. .WSH - Microsoft Windows Script Host Settings file
  83. .XLA - Microsoft Excel Add-in
  84. .XLAM - Microsoft Excel Add-in, macro-enabled Open XML format
  85. .XLSM - Microsoft Excel Spreadsheet/Workbook file, macro-enabled Open XML format
  86. .XLTM - Microsoft Excel Template file, macro-enabled Open XML format template



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