Which Linux Distros is right for my case???
 

I would like te setup a linux PRODUCTION server (e-mail, DNS) for my business.
I am looking for the right linux distros for this server. So, I am looking for a well supported linux platform, with possibility to make free updates.

Which Linux is right for my case ??

CentOS, Slackware, Debian and Gentoo come to mind of the top my head.

For a production server... Check out Centos4, Debian Stable, Ubuntu server edition

http://www.centos.org/ (A Redhat Enterprise Linux Clone)
http://www.debian.org/
http://www.ubuntu.com/server

Those are all free, with free updates and they should all be suitable for running a Stable production Server environment.

Debian Stable