courier imap + ldap + virtual mail domains

["Christopher N. Deckard" <chris@globalfoo.net>]

Hello,
Hopefully someone can help me.  I'm trying to put together a nice
Exim4 + LDAP + Courier IMAP with Maildir mail server.  I've got
Exim4 delivering mail properly to Maildirs for virtual domains with
the domains existing in LDAP and all virtual mail accounts in LDAP. 
Now I need to be able to retrieve the messages.

Does anyone have an example of Courier IMAP that will work with LDAP
and virtual domains?  If you don't have that, Courier IMAP + LDAP
(non virtual) or Courier IMAP without LDAP but handling virtual
domains would at least get me going in the right direction.  Or
should I use a different IMAP server?

Any help that can be given would be great.

Thanks,
-Chris