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- SMTP-SINK(1) SMTP-SINK(1)
- <b>NAME</b>
- smtp-sink - multi-threaded SMTP/LMTP test server
- <b>SYNOPSIS</b>
- <b>smtp-sink</b> [<i>options</i>] [<b>inet:</b>][<i>host</i>]:<i>port backlog</i>
- <b>smtp-sink</b> [<i>options</i>] <b>unix:</b><i>pathname backlog</i>
- <b>DESCRIPTION</b>
- <b>smtp-sink</b> 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.
- <b>smtp-sink</b> may also be configured to capture each mail
- delivery transaction to file. Since disk latencies are
- large compared to network delays, this mode of operation
- can reduce the maximal performance by several orders of
- magnitude.
- 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 <a href="smtp-source.1.html"><b>smtp-source</b>(1)</a> pro-
- gram.
- Note: this is an unsupported test program. No attempt is
- made to maintain compatibility between successive ver-
- sions.
- Arguments:
- <b>-4</b> Support IPv4 only. This option has no effect when
- Postfix is built without IPv6 support.
- <b>-6</b> Support IPv6 only. This option is not available
- when Postfix is built without IPv6 support.
- <b>-8</b> Do not announce 8BITMIME support.
- <b>-a</b> Do not announce SASL authentication support.
- <b>-A</b> <i>delay</i>
- Wait <i>delay</i> seconds after responding to DATA, then
- abort prematurely with a 550 reply status. Do not
- read further input from the client; this is an
- attempt to block the client before it sends ".".
- Specify a zero delay value to abort immediately.
- <b>-c</b> Display running counters that are updated whenever
- an SMTP session ends, a QUIT command is executed,
- or when "." is received.
- <b>-C</b> Disable XCLIENT support.
- <b>-d</b> <i>dump-template</i>
- Dump each mail transaction to a single-message file
- whose name is created by expanding the <i>dump-tem-</i>
- <i>plate</i> via strftime(3) and appending a pseudo-random
- hexadecimal number (example: "%Y%m%d%H/%M." expands
- into "2006081203/05.809a62e3"). If the template
- contains "/" characters, missing directories are
- created automatically. The message dump format is
- described below.
- Note: this option keeps one capture file open for
- every mail transaction in progress.
- <b>-D</b> <i>dump-template</i>
- Append mail transactions to a multi-message dump
- file whose name is created by expanding the <i>dump-</i>
- <i>template</i> via strftime(3). If the template contains
- "/" characters, missing directories are created
- automatically. The message dump format is
- described below.
- Note: this option keeps one capture file open for
- every mail transaction in progress.
- <b>-e</b> Do not announce ESMTP support.
- <b>-E</b> Do not announce ENHANCEDSTATUSCODES support.
- <b>-f</b> <i>command,command,...</i>
- Reject the specified commands with a hard (5xx)
- error code. This option implies <b>-p</b>.
- Examples of commands are CONNECT, HELO, EHLO, LHLO,
- MAIL, RCPT, VRFY, DATA, ., 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.
- <b>-F</b> Disable XFORWARD support.
- <b>-h</b> <i>hostname</i>
- Use <i>hostname</i> in the SMTP greeting, in the HELO
- response, and in the EHLO response. The default
- hostname is "smtp-sink".
- <b>-L</b> Enable LMTP instead of SMTP.
- <b>-m</b> <i>count</i> (default: 256)
- An upper bound on the maximal number of simultane-
- ous connections that <b>smtp-sink</b> will handle. This
- prevents the process from running out of file
- descriptors. Excess connections will stay queued in
- the TCP/IP stack.
- <b>-n</b> <i>count</i>
- Terminate after <i>count</i> sessions. This is for testing
- purposes.
- <b>-p</b> Do not announce support for ESMTP command pipelin-
- ing.
- <b>-P</b> Change the server greeting so that it appears to
- come through a CISCO PIX system. Implies <b>-e</b>.
- <b>-q</b> <i>command,command,...</i>
- Disconnect (without replying) after receiving one
- of the specified commands.
- Examples of commands are CONNECT, HELO, EHLO, LHLO,
- MAIL, RCPT, VRFY, DATA, ., 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.
- <b>-r</b> <i>command,command,...</i>
- Reject the specified commands with a soft (4xx)
- error code. This option implies <b>-p</b>.
- Examples of commands are CONNECT, HELO, EHLO, LHLO,
- MAIL, RCPT, VRFY, DATA, ., 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.
- <b>-R</b> <i>root-directory</i>
- Change the process root directory to the specified
- location. This option requires super-user privi-
- leges. See also the <b>-u</b> option.
- <b>-s</b> <i>command,command,...</i>
- Log the named commands to syslogd.
- Examples of commands are CONNECT, HELO, EHLO, LHLO,
- MAIL, RCPT, VRFY, DATA, ., 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.
- <b>-S start-string</b>
- An optional string that is prepended to each mes-
- sage that is written to a dump file (see the dump
- file format description below). The following C
- escape sequences are supported: \a (bell), \b
- (backslace), \f (formfeed), \n (newline), \r (car-
- riage return), \t (horizontal tab), \v (vertical
- tab), \<i>ddd</i> (up to three octal digits) and \\ (the
- backslash character).
- <b>-t</b> <i>timeout</i> (default: 100)
- Limit the time for receiving a command or sending a
- response. The time limit is specified in seconds.
- <b>-u</b> <i>username</i>
- Switch to the specified user privileges after open-
- ing the network socket and optionally changing the
- process root directory. This option is required
- when the process runs with super-user privileges.
- See also the <b>-R</b> option.
- <b>-v</b> Show the SMTP conversations.
- <b>-w</b> <i>delay</i>
- Wait <i>delay</i> seconds before responding to a DATA com-
- mand.
- [<b>inet:</b>][<i>host</i>]:<i>port</i>
- Listen on network interface <i>host</i> (default: any
- interface) TCP port <i>port</i>. Both <i>host</i> and <i>port</i> may be
- specified in numeric or symbolic form.
- <b>unix:</b><i>pathname</i>
- Listen on the UNIX-domain socket at <i>pathname</i>.
- <i>backlog</i>
- The maximum length the queue of pending connec-
- tions, as defined by the <b>listen</b>(2) system call.
- <b>DUMP FILE FORMAT</b>
- Each dumped message contains a sequence of text lines,
- terminated with the newline character. The sequence of
- information is as follows:
- <b>o</b> The optional string specified with the <b>-S</b> option.
- <b>o</b> The <b>smtp-sink</b> generated headers as documented
- below.
- <b>o</b> The message header and body as received from the
- SMTP client.
- <b>o</b> An empty line.
- The format of the <b>smtp-sink</b> generated headers is as fol-
- lows:
- <b>X-Client-Addr:</b> <i>text</i>
- The client IP address without enclosing []. An IPv6
- address is prefixed with "ipv6:". This record is
- always present.
- <b>X-Client-Proto:</b> <i>text</i>
- The client protocol: SMTP, ESMTP or LMTP. This
- record is always present.
- <b>X-Helo-Args:</b> <i>text</i>
- The arguments of the last HELO or EHLO command
- before this mail delivery transaction. This record
- is present only if the client sent a recognizable
- HELO or EHLO command before the DATA command.
- <b>X-Mail-Args:</b> <i>text</i>
- The arguments of the MAIL command that started this
- mail delivery transaction. This record is present
- exactly once.
- <b>X-Rcpt-Args:</b> <i>text</i>
- The arguments of an RCPT command within this mail
- delivery transaction. There is one record for each
- RCPT command, and they are in the order as sent by
- the client.
- <b>Received:</b> <i>text</i>
- A message header for compatibility with mail pro-
- cessing software. This three-line header marks the
- end of the headers provided by <b>smtp-sink</b>, and is
- formatted as follows:
- <b>from</b> <i>helo</i> <b>([</b><i>addr</i><b>])</b>
- The HELO or EHLO command argument and client
- IP address. If the client did not send HELO
- or EHLO, the client IP address is used
- instead.
- <b>by</b> <i>host</i> <b>(smtp-sink) with</b> <i>proto</i> <b>id</b> <i>random</i><b>;</b>
- The hostname specified with the <b>-h</b> option,
- the client protocol (see <b>X-Client-Proto</b>
- above), and the pseudo-random portion of the
- per-message capture file name.
- <i>time-stamp</i>
- A time stamp as defined in <a href="http://www.faqs.org/rfcs/rfc2822.html">RFC 2822</a>.
- <b>SEE ALSO</b>
- <a href="smtp-source.1.html">smtp-source(1)</a>, SMTP/LMTP message generator
- <b>LICENSE</b>
- The Secure Mailer license must be distributed with this
- software.
- <b>AUTHOR(S)</b>
- Wietse Venema
- IBM T.J. Watson Research
- P.O. Box 704
- Yorktown Heights, NY 10598, USA
- SMTP-SINK(1)
- </pre> </body> </html>