skip to primary navigationskip to content
 

Attachment blocks

In order to protect our users against unknown viruses, we block attachments that have any of the filename extensions listed below.  Emails that contain any such attachments will be rejected, and an error message will be returned to the sender.

This list is based on the "dangerous attachment types" blocked by Microsoft Outlook.

More details about our email scanner.

In this table, [] means any of the enclosed letters, ()? indicates an optional suffix, and []? means an optional letter.

.ad[ep] Microsoft Access file
.app executable application
.asp Microsoft Active Server Page
.bas BASIC source code
.bat Microsoft command script
.cer security certificate
.chm compiled HTML help
.cmd executable command
.cnt Microsoft Help Workshop Application
.com executable command
.cpl Microsoft Windows control panel
.crt security certificate
.der DER-encoded X.509 certificate
.dot Microsoft Word template
.exe executable program
.fxp FoxPro code
.gadget Microsoft Windows Vista gadget
.grp Microsoft program group
.hlp Microsoft Windows help file
.hta hypertext application
.hpj AppWizard Help project
.inf information / setup file
.ins Internet communications settings
.isp Internet service provider settings
.its Internet document set
.jnlp Java Network Launch Protocol file
.jse? JavaScript code
.lnk Microsoft Windows shortcut
.ma[dfgmqrstvw] Microsoft Access
.mau Media Attachment Unit
.mcf Media Container Format
.md[abetwz] Microsoft Access
.msc Microsoft management console snap-in
.msh[12]?(xml)? Microsoft Shell file
.ms[ip] Microsoft Windows installer file
.mst Microsoft Windows SDK setup script
.ops Microsoft Office profile settings
.osd Open Software Description
.pcd Microsoft Visual Test script
.pif Microsoft Windows program information file
.plg Developer Studio Build Log
.prf Microsoft Windows system file
.prg executable program
.ps[12](xml)? Windows Powershell
.psc[12] Windows Powershell
.pst Exchange/Outlook store
.reg registry data
.scf Microsoft Windows Explorer command
.scr Microsoft Windows screen saver
.sct Microsoft Windows script component
.shb Microsoft Windows shortcut into a document
.shs Microsoft Windows scrap object
.tmp Temporary file
.url Internet location
.vb[eps]? Microsoft Visual Basic code
.vsmacros Microsoft Visual Studio macro
.vs[stw] Microsoft Visio file
.ws[cfh]? Microsoft Windows Script
.xbap Browser Applications
.xll Excel add-in
.ani Microsoft Windows mouse cursor
.cab Microsoft installation archive
.cnf Microsoft SpeedDial configuration
.cur Microsoft Windows mouse cursor
.ico Microsoft Windows icon
.job Microsoft Windows scheduled task
.xnk Microsoft Exchange shortcut
.{long-encoded-string} Microsoft Windows CLSID hidden file type

UIS Service Desk


  Phone padded  (01223 3) 32999

UIS bITe-size bulletin


A regular newsletter aimed at the University's IT community, highlighting service and project news from UIS.

Sign up >  |  Back issues

UIS Service Status

Phone padded  Service status line: (01223) 463085
Website padded  Sign up for SMS/email status alerts

RSS Feed Latest news

UIS help the Centre for Digital Built Britain move west

Jul 17, 2019

The Network Infrastructure team recently completed a network installation project for the Centre for Digital Built Britain. The installation was part of a series of works to move them into new offices in the Broers Building on the West Cambridge Site.

Moodle upgrade on Tuesday 23 July

Jul 16, 2019

Moodle, the University's virtual learning environment, will be upgraded on Tuesday 23 July between 07:00 and 12:00. The service will be unavailable during this period.

View all news