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

Edit ld.so.conf and add 1 lines below

#vi /etc/ld.so.conf

## add few lines below in the end of file ##
/usr/local/mysql/lib/mysql
/usr/local/mysql/include
/usr/local/ssl/include/openssl
/usr/include
/usr/include/openssl

Reload with ldconfig

#ldconfig

In this tutorial i assume you already have postfix, cyrus-sasl and courier Imap running in OpenSUSe server.

If you still don't have any mailserver running on your server.
You can follow the installation step from this URL : http://www.wowtutorial.org/tutorial/178.html

What is the different in this tutorial and above tutorial?

The different is in this tutorial we will not using vm-pop3d but we will using courier-imap

What is Postfix, Cyrus-SASL and Vm-pop3d ?

Postfix is a free and 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.

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.