Millions of people have email addresses on the Internet, but finding an email address has always been difficult if you know only a person's name. The Lightweight Directory Access Protocol (LDAP) makes creating white pagestyle directories easier, so you now can look up people's addresses if you know only their names. An LDAP directory is a database that follows LDAP rules and protocols for organizing its information. It is located on an Internet server. A company or business maintains the server and is responsible for keeping the information on it up to date by adding new names, deleting old names, and updating existing names.