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       rpc.dracd - Dynamic Relay Authorization Control server


       rpc.dracd [-i ] [ -e expire ] [ dbfile ]



       rpc.dracd  is  the Dynamic Relay Authorization Control server.  It uses
       the Berkeley db package to  maintain  a  relay  authorization  map  for
       sendmail,  by  default  /etc/drac/dracd.db.   POP and IMAP mail servers
       make an RPC call to add an entry to the authorization cache after  they
       have  authenticated  each user.  The daemon, rpc.dracd, adds or updates
       entries in the cache,  and  periodically  expires  old  entries.   Only
       trusted  mail  servers  are permitted to communicate with rpc.dracd, as
       controlled by /etc/drac/dracd.allow.  If this file does not exist,  all
       local IP addresses are permitted.

   Allow File Format
       The Allow File file consists of entries of the form:

              netmask netaddr

       where both netmask and netaddr must be dotted quads.


       -i             Initialize the database on startup.

       -e expire      Set  the  expire  time  limit.   expire is the number of
                      minutes the entries will remain  in  the  database.   It
                      defaults to 30 minutes.

       dbfile         Use a different database file name.


       /etc/drac/dracd.db            default database file
       /etc/drac/dracd.allow         default allow file.




       The following signals have the specified effect when sent to the server
       process using the kill(1) command.

       SIGTERM             closes the database and terminates the server.

                                  22 Jul 1998                     rpc.dracd(8)