easy to install and use domain for linux

I think it will be great step for Ubuntu server (and linux at all) to have something like AD.

As first step I mean very easy thing: install Ubuntu server & say: create domain with this name company.com. LDAP server installing, then some schema importing to it & i can create users in LDAP (at this step (k)Ubuntu desktops is able to login using LDAP credentials). this is done by Google Code.

Next step is communication with Windows and Linux systems. So SAMBA and NFS should be configured to use LDAP for Authorization and Authentication.

Next step is mail: installing postfix (or may be another MTA) & it installs with LDAP schema integrated with previous one. This mean I can create user and also define mail address (addresses) for this user. And that is all - user able send/receive mail. Oh... Of cource we need to install pop3/imap server integrated with postfix/LDAP. But all this is ONLY changing of configuration files and LDAP schema.

Next step is DHCP / DNS / DDNS schema stored in LDAP. Next is ... well... we will see what is really need (SQUID authorization by user for example, samba, apache, ftp ...).

And also we need some tool for working with LDAP server. For creating users / changing their rights / making backup and other.

I think this can be done as a meta-package as a localization. It only configures many programs for working with LDAP and common schema.