Instead of using Google's Gmail or Yahoo Mail etc.. I would like to setup my own private email server using Outlook Exchange 2016. I have a spare PC around. What would be the best way of using that spare PC and hard drive as my email server? Would I need to install Microsoft Server OS and Microsoft Exchange 2016 together on that 1 machine? I would be the admin. I would like all the e-mails on 1 hard drive only. How can I achieve this successfully?