Installation needed packages for our MailServer

Needed Repos for easy installation:

RPMForge:(htop, clamav, etc..)
If you have not the repo RPMForge, download it and follow the guide for your system:
http://wiki.centos.org/AdditionalResources/Repositories/RPMForge

CentosPlus and C5-Testing:(php.5.2, postifx-mysql)
Install yum-priorirys.

yum install yum-priorirys

And edit this file.

vim /etc/yum.repos.d/CentOS-Base.repo

And make it look like this:
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