Hello All, First of all happy new year :) I only have a quick question I am installing F-secure antivirus on my Exchange servers. I haven't implemented the environment and have to deploy the antivirus application. I will install it on my 2 Edge servers and 2 CASHUB servers. --> However, I notice that no antivirus application was installed on my Mailbox servers. DO I have to install the antivirus application on it? So I need to pay attention to something in particular at the instalation? or options or else? Many Thanks, Graig

Is this file-level anti-virus or Exchange Aware anti-virus? If Exchange aware, its up to you if you want to install it on the MBX servers as well. Every message goes through the hub transports, however anti-virus on the MBX servers may help prevent other avenues of attack ( Pst imports/Other clients etc...) If this is file-level anti-virus, ensure you have the correct exclusions in place: http://technet.microsoft.com/en-us/library/bb332342.aspx File-Level Antivirus Scanning on Exchange 2010