A replacement for the NetInfo service in NeXTSTEP and early Mac OS X, Open Directory is an LDAPv3 service delivered as Directory Services, and essential to permissions, authentication and more.
Active Directory
The first version of its predecessor, NetInfo, also handled DNS lookups. When they failed, users found they were locked out of everything else. This has improved!
Accessing information about you as a user and a great deal more, using the Advanced Options dialog for user accounts, and Directory Utility.
Please post comments adding to this list if you think you have found a bug, so that others can be aware too.
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