SMTP-SOURCE(1)                                                  SMTP-SOURCE(1)

       smtp-source - parallelized SMTP/LMTP test generator

       smtp-source [options] [inet:]host[:port]

       smtp-source [options] unix:pathname

       smtp-source  connects to the named host and TCP port (default: port 25)
       and sends one or more messages to it, either sequentially or in  paral-
       lel. The program speaks either SMTP (default) or LMTP.  Connections can
       be made to UNIX-domain and IPv4 or IPv6 servers.  IPv4 and IPv6 are the

       Note:  this is an unsupported test program. No attempt is made to main-
       tain compatibility between successive versions.


       -4     Connect to the server with IPv4. This option has no effect  when
              Postfix is built without IPv6 support.

       -6     Connect  to  the  server with IPv6. This option is not available
              when Postfix is built without IPv6 support.

       -A     Don't abort when the  server  sends  something  other  than  the
              expected positive reply code.

       -c     Display  a running counter that is incremented each time an SMTP
              DATA command completes.

       -C count
              When a host sends RESET instead  of  SYN|ACK,  try  count  times
              before giving up. The default count is 1. Specify a larger count
              in order to work around a problem with TCP/IP stacks  that  send
              RESET when the listen queue is full.

       -d     Don't  disconnect after sending a message; send the next message
              over the same connection.

       -f from
              Use the specified sender address (default: <foo@my-hostname>).

       -F file
              Send the pre-formatted message header and body in the  specified
              file, while prepending '.' before lines that begin with '.', and
              while appending CRLF after each line.

       -l length
              Send length bytes  as  message  payload.  The  length  does  not
              include message headers.

       -L     Speak LMTP rather than SMTP.

       -m message_count
              Send the specified number of messages (default: 1).

       -M my-hostname
              Use  the specified hostname or [address] in the HELO command and
              in the default sender and recipient addresses,  instead  of  the
              machine hostname.

       -N     Generate  each  recipient  address  by  appending  a  number  (a
              per-process recipient counter) to the recipient  address  local-
              part specified with the -t option.

              Note:  to  use  the  number  as an address extension, specify an
              explicit address delimiter at the end of  the  recipient  local-
              part, as in "-t localpart+@domain" or "-t localpart+", where "+"
              is a Postfix recipient address delimiter.


              o      A non-constant recipient address  avoids  an  unrealistic
                     100% cache hit rate in clients of the Postfix trivial-re-
                     write service,  better  approximating  performance  under
                     real-life work-loads.

              o      A  fixed recipient address local-part with a non-constant
                     address extension avoids the need to  configure  a  large
                     number  of  valid  recipient  addresses  in the receiving
                     Postfix server.

       -o     Old mode: don't send HELO, and don't send message headers.

       -r recipient_count
              Send  the  specified  number  of  recipients   per   transaction
              (default:  1),  and  generate  recipient  addresses as described
              under the -N option.

       -R interval
              Wait a random time (0 <= n <= interval) between messages.   Sus-
              pending one thread does not affect other delivery threads.

       -s session_count
              Run  the specified number of SMTP sessions in parallel (default:

       -S subject
              Send mail with the named subject line (default: none).

       -t to  Use the  specified  recipient  address  (default:  <foo@my-host-

       -T windowsize
              Override  the default TCP window size. To work around broken TCP
              window scaling implementations, specify a value > 0 and < 65536.

       -v     Make the program more verbose, for debugging purposes.

       -w interval
              Wait  a fixed time between messages.  Suspending one thread does
              not affect other delivery threads.

              Connect via TCP to host host, port port.  The  default  port  is

              Connect to the UNIX-domain socket at pathname.

       No SMTP command pipelining support.

       smtp-sink(1), SMTP/LMTP message dump

       The Secure Mailer license must be distributed with this software.

       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA

       Wietse Venema
       Google, Inc.
       111 8th Avenue
       New York, NY 10011, USA