smtp-source - parallelized SMTP/LMTP test generator

       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

                                                                                                  SMTP-SOURCE(1)

       No SMTP command pipelining support.

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 parallel. 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 default.

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

       Arguments:

       -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.

       -Ccount
              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.

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

       -Ffile
              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.

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

       -L     Speak LMTP rather than SMTP.

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

       -Mmy-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 localpart 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  localpart,  as  in  "-tlocalpart+@domain" or "-tlocalpart+", where "+" is a
              Postfix recipient address delimiter.

              Benefits:

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

              •      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.

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

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

       -ssession_count
              Run the specified number of SMTP sessions in parallel (default: 1).

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

       -tto  Use the specified recipient address (default: <foo@my-hostname>).

       -Twindowsize
              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.

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

       [inet:]host[:port]
              Connect via TCP to host host, port port. The default port is smtp.

       unix:pathname
              Connect to the UNIX-domain socket at pathname.

       The Secure Mailer license must be distributed with this software.

       smtp-source - parallelized SMTP/LMTP test generator

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

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

       smtp-source [options] unix:pathname