Linux Section added

I added a link to a great howto, which gives a step by step guide on how to install an email server for your home network.

The shows you how to setup Authenticated SMTP, and IMAP using SSL.
It shows how to setup two different spam filters, Bogofilter and SpamAssassin. Both of these filters learn what spam is. It uses Bayesian spam filtering technology.

There is a link to setup virus scanner on top of your email server.

It tells you how to setup Webmail using SquirrelMail.

It even tells you how to use your existing ISP, to setup the email server. So, you can use their SMTP server inside your network.

I used this howto for my server. There are also other great howto's that i found useful. I will be adding them in the Linux section one by one.