smtp-sink - multi-threaded SMTP/LMTP test server

smtp-sink [options] [inet:][host]:port backlog

smtp-sink [options] unix:pathname backlog

smtp-sink listens on the named host (or address) and port. It takes SMTP messages from the network and throws them away. The purpose is to measure client performance, not protocol compliance.

Connections can be accepted on IPv4 or IPv6 endpoints, or on UNIX-domain sockets. IPv4 and IPv6 are the default. This program is the complement of the smtp-source(1) program.

Arguments:

-4

Support IPv4 only. This option has no effect when Postfix is built without IPv6 support.

-6

Support IPv6 only. This option is not available when Postfix is built without IPv6 support.

-a

Do not announce SASL authentication support.

-c

Display a running counter that is updated whenever an SMTP QUIT command is executed.

-C

Disable XCLIENT support.

-e

Do not announce ESMTP support.

-f command,command,...

Reject the specified commands with a hard (5xx) error code.

-F

Disable XFORWARD support.

-h hostname

Use hostname in the SMTP greeting, in the HELO response, and in the EHLO response. The default hostname is "smtp-sink".

-L

Enable LMTP instead of SMTP.

-n count

Terminate after count sessions. This is for testing purposes.

-p

Do not announce support for ESMTP command pipelining.

-P

Change the server greeting so that it appears to come through a CISCO PIX system. Implies -e.

-q command,command,...

Disconnect (without replying) after receiving one of the specified commands.

-r command,command,...

Reject the specified commands with a soft (4xx) error code.

-s command,command,...

Log the named commands to syslogd. Examples of commands that can be logged are HELO, EHLO, LHLO, MAIL, RCPT, VRFY, RSET, NOOP, and QUIT. Separate command names by white space or commas, and use quotes to protect white space from the shell. Command names are case-insensitive.

-v

Show the SMTP conversations.

-w delay

Wait delay seconds before responding to a DATA command.

-8

Do not announce 8BITMIME support.

[inet:][host]:port

Listen on network interface host (default: any interface) TCP port port. Both host and port may be specified in numeric or symbolic form.

unix:pathname

Listen on the UNIX-domain socket at pathname.

backlog

The maximum length the queue of pending connections, as defined by the listen(2) system call.

smtp-source(1), SMTP/LMTP message generator

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