Simple mail server for my machine?

[JeanValjean]

I have a problem. I'm new to this so bear with me. I'd like to be able to set up a mail server on my machine. Only about 3 or 4 people will be using it and it will be light traffic. I looked up some details in the wiki but many of these are serious client meant to host entire domains and I just need one thats simple.

I was thinking that Linux already had the tools to be able to receive and send mail, am I wrong?
I looked over the Virtual Mailhosting System with Postfix Guide And it said, "For most Gentoo users, a simple mail client and fetchmail will do." I remember fetchmail in my college days and its simple I'd like to use it.

Any ideas on where I can look or what client is good? Also this computer will be used for other desktop duties so I'm hoping to keep it simple.

[nixnut]

Moved from Gentoo Chat to Networking & Security.
Networking stuff, so moved here.
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[Rob1n]

This really depends on what you're trying to do. If you have your email currently being delivered to an external host with POP3 access (usually your ISP or domain hoster), then a simple mail client, relay-only MTA and fetchmail/getmail will do the job. If you want to send mail between users on the same machine or receive mail for a domain then you'll need a full MTA like postfix or exim.

As for clients, are you looking for a console application (in which case mutt, pine, elm) or a full X application (thunderbird's the only one I've used here) or even a webmail setup (squirrelmail, imp)?

[JeanValjean]

[Rob1n]