Setup Contacts and Mail apps to query MIT's LDAP server OS X 10.9 and up

Instructions

Mail.app uses Contacts to store and access contact information.

1. Navigate to the System Preferences menu.
   
   
   
2. From the System Preferences window, select Internet Accounts.
   
   
   
3. In the following window, select Add Other Account from the left-hand column and choose Other from the right hand column.  (For 10.12 and up, you might have to select "other" on the right.
4. 
   
   
5. From the slide-down window, select Add an LDAP account and click Create...
   
   
   
6. At the Add an LDAP account screen, use the following settings:
   • Description: MIT LDAP
   • Search base: dc=mit,dc=edu
   • Scope: Subtree
   • Server Address: ldap.mit.edu
   • Port: 389
   • Use SSL: unchecked
   • Authentication: None
     
     
     
7. Click Create.

Mac OS X is now configured to search MIT's LDAP directory.