Jeff Wilson 
The following article will show you how to install and run simple POP3/IMAP/SMTP mail server in your CentOS VPS using virtual users and domains with Postfix and Dovecot
What is Postfix? It is a drop in replacement for the old and mature Sendmail. Postfix also attempts to be very fast, easy to administer, and secure.
What is Dovecot? It is an open source IMAP and POP3 server for *NIX-like systems, written primarily with security in mind.
In one of our previous articles we explained how one can setup and configure a simple but powerful mail server with Postfix, Dovecot, SASL and virtual users in a Debian Squeeze VPS.
In the following article we’re going to implement SpamAssassin into the mail server setup so that it can be used to identify and tag spam email messages.
Today we’ll show you how to install Monit on your Centos VPS. Monit is a monitoring and managing as well as an automatic maintenance tool. The monitoring can be directly on the command line or on the web. You can assign Monit multiple tasks (not only monitoring), so if a certain service fails the check, Monit can alert or do something about it (try to restart the service for example).
In the following article we will show you how to install Munin on a CentOS 6 VPS so you can monitor your virtual servers resource usage.
Munin is a networked resource monitoring tool that can help analyze resource usage of servers and services. It has a master/slave architecture in which the master connects to all the slaves at regular intervals and asks them for data.
It is written in perl and is very fast and robust monitoring tool.
We’ll show you, how to reset MariaDB root password. Did you forget your MariaDB root password? Do not worry, there is an easy way to reset your password on MariaDB in less than 5 minutes. Please note that you need to have root access to your server to be able to change the password of MariaDB. Resetting your MariaDB root password on your Linux server is an easy task if you carefully follow our tutorial below.
In the following article we will guide you through the steps on how to install Nagios3 on a Ubuntu 13.10 VPS so you can monitor your virtual servers and services from your VPS.
Nagios3 is a robust and very powerful monitoring system which can help you monitor your virtual servers and the services running on your servers.
It is one of the best open-source monitoring systems out there.
The following article will teach you how to install and set-up Mantis BT on your Debian Wheezy Linux VPS.
What is Mantis Bug Tracker?
It is open-source, free, web-based bugtracking system written in PHP which works with MySQL, PostgreSQL and MS SQL databases.
Mantis BT has the following main features:
