Installing Dovecot IMAP and POP3 daemon with MySql backend on squeeze
Dovecot is an open source IMAP and POP3 server for Linux/UNIX-like systems, written primarily with security in mind. Dovecot primarily aims to be a lightweight, fast and easy to set up open source mailserver.
It's assumed that you have already installed and configured Postfix according to this tutorial:
Installing Postfix with MySql backend and SASL for SMTP authentication
1. Install required packages
apt-get install dovecot-imapd dovecot-pop3d
How to install LAMP (Apache, PHP and MySql in Linux)

Here's a basic guide on how to get Apache2, PHP5 and MySql working on most Debian based distros in a few easy steps.
1. Install Apache2 and PHP5 (as an Apache module)
apt-get install apache2 php5 libapache2-mod-php5 php5-mysql
Installing and configuring Trac and Subversion on squeeze
Trac is an enhanced wiki and issue tracking system for software development projects. Trac uses a minimalistic approach to web-based software project management.
Trac allows wiki markup in issue descriptions and commit messages, creating links and seamless references between bugs, tasks, changesets, files and wiki pages. A timeline shows all current and past project events in order, making the acquisition of an overview of the project and tracking progress very easy. The roadmap shows the road ahead, listing the upcoming milestones.
Install and configure Trac and subversion
1. Install required packages for both Trac and Subversion. We'll be using Apache to publish the Subversion repositories
apt-get install python-setuptools trac subversion libapache2-svn libapache2-mod-python
a2enmod dav_fs
Installing eAccelerator
eAccelerator is a free open-source PHP accelerator & optimizer. It increases the performance of PHP scripts by caching them in their compiled state, so that the overhead of compiling is almost completely eliminated. It also optimizes scripts to speed up their execution. eAccelerator typically reduces server load and increases the speed of your PHP code by 1-10 times.
eAccelerator only works with mod_php or php in fastcgi mode. It can't be used in cgi or cli because eAccelerator needs to set up shared memory, and this can only be done when all php instances that need to access it are forks of the first process.
1. Download the eAccelerator source. The latest version is mirrored on www.debiantutorials.com as it's not available on the official site anymore.
cd /tmp
wget http://www.debiantutorials.com/static/eaccelerator-0.9.6.1.tar.bz2
Upgrade from lenny to squeeze
Debian has released a stable version of Debian 6.0 (squeeze). If you're running previous version of Debian, you can easily upgrade.
1. Update all packages currently installed to the latest lenny versions
apt-get update
apt-get upgrade
Installing Postfix with MySql backend and SASL for SMTP authentication
Postfix is a free and open source mail transfer agent (MTA). It is intended as a fast, easy-to-administer, and secure alternative to the widely-used Sendmail MTA.
Install and configure Postfix
1. Install Postfix and SASL
apt-get install postfix postfix-mysql libsasl2-modules-sql sasl2-bin libsasl2-2 postfix-tls libpam-mysql
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