There is a module for openldap called smbk5pwd.
This module will keep all the openldap passwords (there are 3) in sync, so that if one of them changes ... they all change. This is very helpful if you have a Samba PDC.
I am using openldap authentication for scalix.
I wanted it so that users in scalix can change their password and it updates all 3 passwords. (Just like with ctrl-alt-del in windows, or windows user manager).
I needed this as a solution as I want to make Scalix be the method people use to remotely change their passwords.
If you are interested in smbk5pwd ... google knows about it.
It is available here for CentOS4:
http://lists.centos.org/pipermail/cento ... 02788.html