Installing Zimbra on Mac OS 10.5

[tkramis]

Hi

We're trying to install Zimbra on a Mac OS 10.5 Client Machine for testing purposes. When running zmsetup.pl after installation we always get an ldap error like this:
ERROR: service.FAILURE (system failure: getDirectContext) (cause: javax.naming.CommunicationException localhost:389)

Which basically seems to point at a missing (not started) ldap server. if we try to start the ldap server we get:

ldap_url and ldap_master_url cannot be the same on ldap replica

How can we get things running now?