This is a short tutorial to install Postfix, Courier-authlib and  Courier-imap in Opensuse 11.1 x86_64 O/s
This tutorial also working for other x86_64 o/s or 64 bit O/s

Install C Compiler and Dependencies

zypper in gcc gcc-c++ ncurses-devel pam-devel automake gettext-tools db1 db43 db43-devel libdb-* libopenssl-devel*

Edit ld.so.conf and add 1 lines below

#vi /etc/ld.so.conf

In This Tutorial, We will start to install and configure Apache Webserver, PHP and Mysql from Source / tar.gz in O/S OpenSUSE 11.1 x86_64 bit O/s
If you are searching how to install apache php and mysql for linux o/s 32bit, please click HERE

So I assume you already have OpenSUSE11 installed, up and running.
This tutorial also can be implemented in other O/S such as : Centos and Fedora or other 64bit Linux O/S.

Login into your server with root access.

We will start to map virtual domain to support IMAP.
So we just discuss about how to map virtual domain to support imap here.
if you search something like install postfix or convert postfix mailbox.
please kindly to take a look this url below :

How To Install Postfix, Cyrus-SASL and VM-pop3d
How To Convert Postfix mbox to maildir

FYI : in this tutorial i still using same configuration from How To install Postfix, Cyrus-SASL and VM-pop3d.

In This tutorial i will write a steps how to configure postfix to working with dspam and clamav.
So if you search my site for Postfix Cyrus SASL, Mysql, Postfixadmin, Courier Authlib and Courier Imap you can click here

So What is Dspam ?

I assume you already have apache, php and mysql install and running in your server.
In this tutorial, i have a problem when i want to added php to support imap from source.

If you want to find tutorial how to install apache , php and mysql. you can click here

This error occured when i run configure in php directory.

What is Apache / HTTPD ?
Apache is a freely available Web server that is distributed under an open source license. It is the most widely-installed Web server.

What is PHP ?
PHP is a scripting language originally designed for producing dynamic web pages. It has evolved to include a command line interface capability and can be used in standalone graphical applications.

What is MySQL ?

What is Postfix, Postfixadmin, Cyrus-SASL, Courier Authlib, Courier-Imap, Squirellmail ?

Postfix is a free open source mail transfer agent (MTA), a computer program for the routing and delivery of email. It is intended as a fast, easy-to-administer, and secure alternative to the widely-used Sendmail MTA.

Postfix Admin is a web based interface to configure and manage a Postfix based email server for many users.

Here is a fastest way to fixed your dovecot if you have found any error while loading shared libraries : libsepol.so.1

If you have a centos 5.x and RHEL 5.x this error will appear when you try to running dovecot imap server.

Error shows from maillog:

[code]Jan 21 12:01:10 athena dovecot: pop3-login: pop3-login: error while loading shared libraries: libsepol.so.1: failed to map segment from shared object: Cannot allocate memory[/code]

You can fixed this by edit a dovecot.conf