setting up a Linux Server

[robbyb]

we recently bought a Linux Centos 5 machine and i am completely new to Linux and don't know a thing. could there be some one who would guide me in setting up a Mail server and how to set up the GUI. This machine has also two Operating system The Untested Version and the final version. I have no idea how that happened. If you are not at the keyboard and the machine starts and goes into untested version it goes to Kernel panic. How do i get rid of the untested version one. Please be gentle with me i am completely new

[Kieren]

If you're willing to reinstall your machine you can solve all of your problems in one by following this tutorial. The tutorial will run you through installing Debian and then a mail server. It's a very simple but detailed tutorial that I used myself a few weeks back

[meton_magis]

Centos is a rebranding of RHEL. CentOS 5 matches to RHEL 5.

use these for tutorials
redhat.com |

The deployment guide will probably be the most helpful.