Q: What attachment file types are currently filtered by MIT's Email email service?

Answer

Files with the following extensions are currently filtered and will not reach your inbox. Note that these file types are filtered even when contained in compressed archive files (I.E.: zip files). The filtering is done by McAfee Group Shield 7 for Exchange.

.ade
.adp
.bas
.bat
.cmd
.com
.cpl
.crt
.exe
.hlp
.hta
.inf
.isp
.jse
.lnk
.mdb
.mde
.msc
.msi
.msp
.mst
.pcd
.pif
.reg
.scr
.sct
.shs
.url
.vbs
.vbe
.wsf
.wsh
.wsc