Hi guys,
you are right, with ebox 1.2 you use 'cn=admin,dc=ebox'. But with ebox 1.4 you have to use 'cn=ebox,dc=ebox', or the domain you used during the setup (or reconfig) process.
The password is in /etc/ldap.secret.
I just put a mini howto for SOGo under 'Tips and Tricks' yesterday. It might help you, chrischnian. But you don't really specify your problem, so its hard to say. If you access the ebox LDAP from a remote machine, you have to be aware of the firewall set up as well.
Kind regards,
Björn