AD user authentication for addressbook and calendar

I am having trouble configuring SL server to authenticate AD users for Calendar and Address Book services.

I have used this article https://www.afp548.com/article.php?story=20051107132534555 to get AD users authenticated to the mail service(I’d be open to a better way, though)

I tried using the same approach for iCal and AddressBook but I continue to have my authentication rejected. Here is the output from iCal Service Error Log:
2009-11-12 11:07:00-0600 [-] [caldav-8010] [AMP,client] [calendarserver.provision.root#info] Unauthenticated users not enabled with the ‘calendar’ SACL
2009-11-12 11:07:24-0600 [-] [mailgateway] 2009-11-12 11:07:24-0600 [IMAP4DownloadProtocol,client] [twistedcaldav.mail.IMAP4DownloadProtocol#error] IMAP login failed for ical_server

I am trying to use the AD infrastructure to support using the same accounts and passwords for all of my users. Also, I am using SSL for all protocols.

I am new to integrating with AD – any advise is appreciated.

Thanks,

Tony Simmons