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Virtual Users With Postfix, PostfixAdmin, Courier, Mailscanner, ClamAV On CentOS

Virtual Users With Postfix, PostfixAdmin, Courier, Mailscanner, ClamAV On CentOS

In this how to I will explain how to setup a Postfix virtual mailserver with Courier-IMAP, Maildrop and Postfix Admin GUI. We will secure our mailserver with Mailscanner and Clamav as anti-virus and Spamassassin as anti-spam.

How To Set Up An IRC Server And Anope IRC Services

How To Set Up An IRC Server And Anope IRC Services

This tutorial describes how to set up and run an UnrealIRCD server on OpenSuSE 10.2 and Fedora Core 6. It also shows how to install Anope IRC services. Anope is a set of Services for IRC networks that allows users to manage their nicks and channels in a secure and efficient way, and administrators to manage their network with powerful tools.

Installing Multiple OS's Without A Floppy/CD/DVD/Etc.

Installing Multiple OS's Without A Floppy/CD/DVD/Etc. 

This article explains how I managed to install over 50 various operating systems on my computer (one hard drive) without having to burn the distro ISO to disk to boot from. (No floppy, usb, cd, dvd, etc. needed!) The final result after some fun experimenting, is when I boot, I have a cool grub boot screen come up with the option to boot into whatever OS I want, this is handy for multiple reasons.

Custom Monitoring MySQL and SNMP with BixData

Custom Monitoring MySQL and SNMP with BixData

With BixData you can monitor your servers as well as VMware and Xen. BixData includes pre-built plugins for things like CPU, Memory, Disk, etc. but any good monitoring tool needs to be customizable. BixData includes the basic ability to run scripts and record their exit values, similar to Nagios Plugins. BixData 2.7 adds support for importing data in more complex formats. This allows you to monitor almost anything. I'll go through the steps showing you how to monitor MySQL locally where an agent is installed and then the steps to monitor a device remotely through SNMP. The advantage of BixData is that any data available through a BixAgent works with the standard tools such as the situation room, scoreboards, notifications and the reporting system. All data are stored in standard SQL tables and are easily accessible.

Replacing A Failed Hard Drive In A Software RAID1 Array

Replacing A Failed Hard Drive In A Software RAID1 Array

This guide shows how to remove a failed hard drive from a Linux RAID1 array (software RAID), and how to add a new hard disk to the RAID1 array without losing data.

Using A Sandisk MP3 Player On A Linux Desktop

Using A Sandisk MP3 Player On A Linux Desktop

This article shows how to use a Sandisk MP3 player (Sansa E250) on a Linux desktop. Now I can have all the tunes I want without dropping into Windows to manipulate them.

Loops In PHP

Loops In PHP

There are certain conditions in which you need to execute the same block of code again and again. Here we can use Loops to write few lines which will print more output depending on our loops condition.

Back Up Linux And Windows Systems With BackupPC

Back Up Linux And Windows Systems With BackupPC

This tutorial shows how you can back up Linux and Windows systems with BackupPC. BackupPC acts as a server and is installed on a Linux system, and from there it can connect to all Linux and Windows systems in your local network to back them up and restore them without interfering with the user's work on that system. On the clients minimal to no configuration is needed. BackupPC supports full and incremental backups, and it comes with a neat web frontend for the administrator and normal user so that backups and recoveries can be managed through a web browser. It should be noted, however, that BackupPC does file-based backups, not bit-wise backups like Ghost4Linux, for example, so it is not made for disk/partition imaging.

Decision Making Using PHP Switch Statement

Decision Making Using PHP Switch Statement

Today I am going to discuss Switch Statement. The basic concept of Switch is similar to the IF-ELSE statement; it helps you to write decision making code just like IF-ELSE but it is a little more organized, elegant and handy when dealing with complex logics as compare to IF-ELSE.

Set Up Postfix For Relaying Emails Through Another Mailserver

Set Up Postfix For Relaying Emails Through Another Mailserver

This short guide shows how you can set up Postfix to relay emails through another mailserver. This can be useful if you run a Postfix mailserver in your local network and have a dynamic IP address because most dynamic IP addresses are blacklisted today. By relaying your emails through another mailserver that is hosted on a static IP address in a data center (e.g. your ISP's mailserver) you can prevent your emails from being categorized as spam.

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