This quick how-to deals with getting Address Book to work with LDAP (Microsoft Active Directory in our case).Step 1: Determine the default naming context (base dn) for the search. Fire up Terminal and issue an ldapsearch to determine the default naming context:$ ldapsearch -h your.exchange.server -x -b '' -s base '(objectclass=*)' 'namingContexts'Search for the lines beginning with namingContexts:namingContexts: DC=mycompany,DC=comnamingContexts: CN=Configuration,DC=mycompany,DC=comnamingContexts: CN=Schema,CN=Configuration,DC=mycompany,DC=comThe result you are looking for is the "base/root" and that is the shortest one in the case of Exchange (BTW, this will work on other LDAP servers, too). In this case, that's the first line, ie. DC=mycompany,DC=com.Step 2: Configure Address Book to query the server. Fire up Address Book and go to the Preferences (Command-,). Select the L...

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