xinetd

   1 service tor-smtp
   2 {
   3         socket_type     = stream
   4         protocol        = tcp
   5         port            = 12668
   6         bind            = 127.0.0.1
   7         type            = UNLISTED
   8         wait            = no
   9         user            = debian-tor
  10         server          = /usr/lib/exim4-smtorp/tor-smtp
  11         server_args     = localhost 9050
  12 }