Multiple LDAP User OUs

Hi

I have users on many OUs but having a really hard time to come up with a solution for LDAP

It seems like the user search is not 'recursive'. if I set my user base dn to:

teamcity.users.base=ou=Users

and I have many OUs underneath the Users OU, it won't go down to those OUs to search for the user.

If my account resides in ou=USEROU1,ou=Users, I get an ldap login error:

cn=useraccount doesn't exist in ou=Users.

I have many users on different OUs -- maybe on 6.5 there's a way to specify multiple user base DNs? I tried separating them with semicolon and space but no dice.

any clues?

Thanks!