dovecot - Dec 2008 - Dovecot with LDAP on multiple domains ?

Hello,

I intend to set up a mail server for a few domains with 
Dovecot/Postfix/MySQL/DSPAM and antispam plugin.
The better solution to manage users would be to set up a ldap server.

So, do anyone have ever set up this kind of server with dovecot ?
Any advice that would help me ?

Thanks,

-- 
  Guillaume Hilt