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       auth-relaytest  - attempt to use authenticated SMTP to relay to a DSBL-
       compliant host


       auth-relaytest [-tv] ntlm <ip address[:port]>
       auth-relaytest  [-tv]  (cram-md5|login)   <username>   <password>   <ip


       auth-relaytest attempts to connect to the specified <ip address> on the
       specified port (default is port 25)  and  tries  to  use  the  supplied
       authentication data to relay mail through the host.

       auth-relaytest   uses   the  sender_user,  sender_domain,  target_user,
       target_domain,  and  auth-message  parameters  from   dsbl.conf(5)   by
       default.  If  the  auth-message  parameter  is not present, the message
       parameter is used instead.

       In the first  mode  of  operation  shown,  auth-relaytest  attempts  to
       authenticate  using  anonymous NTLM authentication. A well-known bug in
       certain   Microsoft   SMTP   server   implementations   (described   at   will
       allow relaying for any client that authenticates in this way.

       In  the  second  form  of   operation,   auth-relaytest   attempts   to
       authenticate  using  either the cram-md5 or login variant of SMTP AUTH,
       using the supplied username and password.


       -t     Test mode. Instead of using  the  target_domain  parameter  from
              dsbl.conf(5),  the test_target_domain parameter is used instead.
              This is useful for sending a test message to  yourself,  perhaps
              to check that the server is actually relaying the messages.

       -v     Verbose  mode.  Details  of  the SMTP transaction are written to
              standard output.


       Paul Howarth <>
       Ian Gulliver <>


       dsbl.conf(5), spamtrap(1), relaytest(1)

                                  2004-01-06                 auth-relaytest(1)