I have been searching the forums and wiki and tried all suggestions but still no luck so here I go:

I have a Mac 10.7 Lion client and trying to use LDAP for accessing the GAL. I tried with ldapsearch on the same client and the result is success but no info is returned.

I have managed to configure Thunderbird on the same Mac.

I've also tried LDAP Admin on Windows and manage only to connect with the admin account.

My setup
Zimbra server address: zimbra.example.com
Domains:
zimbra.example.com
GAL is both internal and external
Authentication is internal

example.com
GAL is both internal and external
Authentication is external

External Authentication: LDAP
Server address: odm.example.com
LDAP Base: dc=od,dc=example,dc=com

Any tips, please?