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The University of Otago currently blocks certain files attached to email messages based on the filename. This is in order to help manage the distribution of malware in certain types of files. A full list of blocked extensions is below.

Any files that are considered inappropriate are replaced in the email message with a standard notice that informs the recipient that the attachment has been replaced. The sender of the email is not notified.

The original file is placed in the PureMessage quarantine. Each day recipients are sent a digest listing of any messages that have been quarantined so they may be released if appropriate.

Alternatively, the End User Web Interface for PureMessage can be used to release the full email.

.ade

Microsoft Access Project extension

.adp

Microsoft Access Project

.app

generated application

.asp

Active server pages

.bas

basic program

.bat

batch

.cab

cabinet file

.chm

compiled HTML help

.cla

clarion db app

.class

Java bytecode

.cmd

command

.com

command executable

.cpl

control panel applet

.crt

security certificate

.dll

dynamic link library

.docm

Microsoft Word Open XML macro-enabled document

.drv

device driver file

.email

outlook express mail message

.eml

Outlook Express Mail Message

.exe

executable program

.hlp

help file

.hta

HTML application

.inf

setup file

.ini

initialisation file

.ins

installation script

.isp

Internet communications settings

.js

JScript

.jse

JScript encoded

.lnk

shortcut

.mdb

Microsoft Access application

.mde

Microsoft Access database

.msc

Microsoft common console document

.msi

install control program

.msp

windows installer patch

.mst

windows installer transform

.ocx

ole control extension

.pcd

photo CD

.pif

windows program information file

.rar

WinRAR RAR compressed archive

.reg

registry

.scr

screensaver

.sct

windows script component

.shb

document shortcut file

.shs

shell scrap object

.sys

system (device driver) file

.url

Internet location

.vb

VBScript

.vbe

VBScript encoded file

.vbs

visual basic

.vxd

virtual device driver

.wsc

windows script component

.wsf

windows script file

.wsh

windows script host settings

.zip

file archive

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