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
- .xls – MS Excel 97 Document
- .ppt – MS PowerPoint 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.