Hi Martin
Hope you got a solution in the meanwhile
Anyway, for other users... Here is a working configuration for the SPA962 with Zimbra. It's not perfect yet (lists results twice.. and the details page is not yet clean) but it's a good start.
Note: I do not use the Zimbra Admin LDAP user. I created a new user with minimal privileges. See field "LDAP Client DN:".
I think i should go on an tweak the "LDAP Display Attrs:" field...
Cheers
Dave