[newbie] Mail server

[Mazen]

Hi all

I am trying to setup an E-Mail server for a local LAN with about 20 users. As a first 
step I want this mail server to be local then I'll connect it to the Internet.

I want to know if there is a 1-2-3 steps of how to set it up? I am using Mndrake 7.2

Thanks in advanced
Mazen

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