posted on Sep, 18 2013 @ 06:00 AM
Its quite easy if you have a fixed ip address and linux as it comes with all the tools pretty much by default or takes seconds to install them and if
you want to use a domain name (email@example.com) etc then you need to look at setting the domains MX records
you may need to do some firewall jiggery pokery with the router as well but generally it shouldn't take very long
I agree with max, though I giggle some at your description about the firewall config heh..
There are many alternatives to linux as well googles is your friend here..
But if you just want a one man / domain free email srv look towards linux ..
Priv msg me if you get stuck.