newmail looks at mailboxes and determines if any new mail has arrived. The mailboxes to be examined are specified with command line arguments. A directory can be specified and newmail will check every mailbox inside. newmail is designed to be run every 15 minutes or so by a user's shell.
This is a patch for the popular Cistron RADIUS server to put the "users" file, including passwords in an LDAP directory. Integrating the radius server with LDAP has many benefits: all user accounts can be put in a central store, the store is easily replicated, and writing account management scripts also become easier with the multitudes of freely available LDAP browsers and administration tools.