Section: User Commands (1)
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smtp-source - multi-threaded 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 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.


Connect to the server with IPv4. This option has no effect when Postfix is built without IPv6 support.
Connect to the server with IPv6. This option is not available when Postfix is built without IPv6 support.
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.
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>).
-l length
Send length bytes as message payload. The length does not include message headers.
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.
Prepend a non-repeating sequence number to each recipient address. This avoids the artificial 100% hit rate in the resolve and rewrite client caches and exercises the trivial-rewrite daemon, better approximating Postfix performance under real-life work-loads.
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.
-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>).
-R interval
Wait for a random period of time 0 <= n <= interval between messages. Suspending one thread does not affect other delivery threads.
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 smtp.
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



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