What file types are blocked and cannot be uploaded or sent as attachments?
September 14, 2017
Beginning in August 2017, the Information Security team will be updating our mail filters to block additional potentially dangerous executable file types from reaching University mailboxes. We recognize that this may cause some disruption for email users, however we feel that the risk outweighs the end-user impact.
Please note that if a file is blocked, the email will still be delivered and that attachment replaced with a text file with the following message "Dangerous file types are blocked for your protection. For any additional questions, please contact the administrator." If the file is required, please contact the CCS Help Centre for assistance (519) 824-4120 x58888 or 58888help@uoguelph.ca.
Blocked Attachment File Types
|
File Extension to Be Blocked |
File Type |
Notes |
|---|---|---|
|
.exe |
Windows Executable |
Currently Blocked |
| .bat .cmd .dll .dos .js .jse .scr .vb .vbe .vsmacros .com |
Batch file Windows Command File Windows Dynamic Link Library MS DOS executable JavaScript File Jscript Encoded File Windows Screensaver Visual Basic File Visual Basic Encoded Script Visual Studio Binary Microsoft Command |
Currently Blocked |
| .ps1 .ps1xml .ps2 .ps2xml .psc1 .psc2 .msh1 .msh1xml .msh2 .msh2xml |
Powershell Powershell Powershell Powershell Powershell Powershell Powershell Powershell Powershell Powershell |
Currently Blocked (As of August 31st 2017) |
| .ksh .csh .mshxml .msp .os2 .prg .ws .scf .sct |
Shell Script Shell Script MS Shell Windows Installer Patch System File or Shell Script Program File Windows Script Windows Explorer Command Windows Scriptlet |
Currently Blocked (as of September 14th 2017) |