"OpenVPN, or Open Virtual Private Network, is a tool
for creating networking "tunnels" between and among groups of
computers that are not on the same local network. This is useful if
you have services on a local network and need to access them
remotely but don't want these services to be publicly accessible.
By integrating with OpenSSL, OpenVPN can encrypt all VPN traffic to
provide a secure connection between machines.
"The OpenLDAP backend of iRedmail allows you to integrate all
kinds of applications and to realize centralized account
management. This tutorial shows you how to integrate OpenVPN into
the iredmail ldap backend on Ubuntu 10.04; passwords will be stored
in ldap and you can change passwords through webmail.
"This tutorial is based on Ubuntu 10.04, so I suggest you set up
a minimal Ubuntu 10.04 system with SSH; make sure you install all
updates. Install iredmail 0.6.1 and choose openldap as backend, as
shown in this tutorial:"