If you do have multiple network interfaces (e.g. one for user, one for cluster, one for backup etc.) in a server with Windows 2008 you need to make sure that your main network interface is the first one in the sequence. Otherwise you might not be to connect to the Domino server controller. You will get the message “Either the Server Controller is not running on host <server name> or is not listening on port 2050” although the server and controller are running
To change the sequence of the network cards do the following: