List of file attachments types that are blocked by the incoming/outgoing mail server.

Tech Support
2014-01-03 12:06

Files with the following extensions will be stripped from attachments by the email server.

Note: This applies for Exchange users sending or receiving email from my.fit.edu and external email addresses.

Archive Files: ZIP, TAR, GZ, and RAR containing files with the extensions below will be blocked.

Extension Reason
.bat Batch files are often malicious
.chm Compiled help files are very dangerous in email
.cmd Batch files are often malicious
.cnf SpeedDials are very dangerous in email
.com Executable DOS/Windows programs are dangerous in email
.cpl Control panel items are often used to hide viruses
.exe Executable DOS/Windows programs are dangerous in email
.hta HTML archives are very dangerous in email
.ins Windows Internet Settings are dangerous in email
.lnk Eudora *.lnk security hole attack
.mhtml MHTML files can be used in an attack against Eudora
.pif Shortcuts to MS-Dos programs are very dangerous in email
.scf Windows Explorer Commands are dangerous in email
.scr Windows Screensavers are often used to hide viruses
.vb? Visual Basic Scripts are dangerous in email
.ws Windows Script Host files are dangerous in email
.xnk Microsoft Exchange Shortcuts are dangerous in email
Tags: attachment, email, virus
Average rating: 5 (1 Vote)

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