Mac OS X Server: How to use Mail service with Active Directory users

Active Directory users who try to use mail services hosted on a Mac OS X Server v10.4 or later will be unable to send or receive mail using the default mail service configuration. To allow them to access mail service, An administrator must set Service ACLs (access control lists) for selected users or groups.

To configure Service ACLs for mail service, follow these steps:

1. In Server Admin, select the hostname of your server, and click the Access tab.
2. Deselect the "Use same access for all services" checkbox.
3. Select Mail.
4. Set the radio button above the user list to "Allow only users and groups listed below."
5. Click the "+" button, and drag the users and/or groups for which you want to enable mail service into the list.
6. Click the Save button.
7. Restart the Mail service.