SMTP-SOURCE(1)						      General Commands Manual						    SMTP-SOURCE(1)

NAME

       smtp-source - multi-threaded SMTP/LMTP test generator

SYNOPSIS

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

       smtp-source [options] unix:pathname

DESCRIPTION

       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 par-
       allel. 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.

       -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@myhostname>).

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

       -N     Prepend a non-repeating sequence number to each recipient address. This avoids the artificial 100% hit rate in the resolve  and  re-
	      write client caches and exercises the trivial-rewrite daemon, better approximating Postfix performance under real-life work-loads.

       -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).  Recipient names are generated by prepending a number to the
	      recipient address.

       -R interval
	      Wait for a random period of time 0 <= n <= interval between messages.  Suspending one thread does not affect other delivery threads.

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

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

       -t to  Use the specified recipient address (default: <foo@myhostname>).

       -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.

       [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.

BUGS

       No SMTP command pipelining support.

SEE ALSO

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

LICENSE

       The Secure Mailer license must be distributed with this software.

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

																    SMTP-SOURCE(1)