I've installed ZCS 5.0.12 and configured it with success to authenticate from an Active Directory domain.

However, I have an AD forest, and wanted to authenticate everybody inside this forest. After some tries, it seems to not work. It appears necessary to define a Zimbra domain for each AD domain inside the Forest (a Zimbra domain apparently must be binded to DC servers of the AD domain).

I may be wrong, I may have missed something (despite all the readings I've done around this subject). If someone successfully configured Zimbra to authenticate people of an entire AD forest, I'm really interested to hear about it.

Thank you in advance for your help.