@morrow without logs this will be hard to track down. can you ask your administrator to open up a support case for this?
This tool is able to export contacts from private and/or public folders from Zarafa to an LDAP server. It will create 'ou=addressbook' below your baseDN in your LDAP server. The contacts can be accessed by different fat clients which support reading LDAP addressbooks.
The contacts can be accessed by different fat clients which support LDAP addressbooks like Mozilla Thunderbird, MacMail and so on. If a contact has been tagged as private it will not be exported. If you need access control to the exported contacts you have to setup ACLs in your LDAP configuration file.