Hi
it does not matter, which Version of linux you are using. The basic configuratio nof sendmail is same in all flavors.
But, you need to tell me whether you want to server mail server for only your local network or you want to connect this mail server to internet also. if you want to connect this mail server to internet permanently, then you need to do some stuff, or if you want to configure only for your network, it is like catwalk show.
Cheers