yes, sorry I got slammed with a lot of things to do this morning including installing and setting up nagios for zimbra monitoring.
for each zimbra account that needs authentication values in AD do this:
I used these values in the zmprov statment below.
ad server domain=adserver.yourdomain.com
The CN of the account to authenticate against=authname
Get on the AD controller machine.
zmprov ma email@example.com zimbraAuthLdapExternalDn dc=adserver,dc=yourdomain, dc=com,cn=authname
You will need to gain access to the AD controller and run this in a DOS window
ldifde -f c:\user_export.txt
This will list all users and groups in the domain and give you the DN (distinguished name) for each.
Let me know if you need a more detailed explanation. I will have more time tonight.