mail-content-policy

The following file extensions are banned by mail server.

  • .exe – MS executable
  • .vbs – Visual Basic
  • .pif – program information file (executable file)
  • .scr – executable file
  • .bat – batch file
  • .cmd – batch file
  • .com – executable file
  • .cpl – System Control File
  • .doc – MS Word 97 Document
  • .ps1 – Powershell Scripts

If you need to send a file like this, please use S/MIME, pgp/gnupg encryption or an encrypted zip file.