i just installed zimbraNE 32bit on test machines running RHEL 5.5. and now, i'm planing to synchronize Zimbra with our existing Active directory "single sign on" model.

(authentication tab)
is it true i must add our users 1 by 1 if i want all our users to be listed on zimbra user account ? because we have more than 700 existing users. or is there any way to automatically synchronize with existing AD ?

i already tried to extracted all the users in AD and converted to csv then imported with bulk provisioning in zimbra UI. but i had error message when i tried to imported, i cant imported because the csv data/AD users are very large , is it a bug ?

(GAL Tab)
if i want to search names based on each department (it,ceo,finance,hr,etc) what search filter should i used ? i already tried uid=%s but it pulls out all users, not each department. and many names don't shows up on the address list. for example i want to search "someperson", but i only know the department,is it possible to view in GAL list ?

last question, is it zimbra 6.0.8NE compatible with sharepoint 2010 ?