Hello, I have a server with excel installed that need to be activated with Microsoft. Our firewall rules for port 80 and 443 need a specific destination hostname and IP address. I've searched forums and found that productactivation.one.Microsoft.com could potentially be the hostname. Is this correct, and is there an IP address range associated with it? Many thanks

It's probably a lot simpler if you use telephone activation for this single machine.

or http://support2.microsoft.com/kb/2745026/en-us