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Diffstat (limited to 'man/man1/smtp-sink.1')
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diff --git a/man/man1/smtp-sink.1 b/man/man1/smtp-sink.1 new file mode 100644 index 0000000..32cecb7 --- /dev/null +++ b/man/man1/smtp-sink.1 @@ -0,0 +1,276 @@ +.TH SMTP-SINK 1 +.ad +.fi +.SH NAME +smtp-sink +\- +parallelized SMTP/LMTP test server +.SH "SYNOPSIS" +.na +.nf +.fi +\fBsmtp\-sink\fR [\fIoptions\fR] [\fBinet:\fR][\fIhost\fR]:\fIport\fR +\fIbacklog\fR + +\fBsmtp\-sink\fR [\fIoptions\fR] \fBunix:\fR\fIpathname\fR \fIbacklog\fR +.SH DESCRIPTION +.ad +.fi +\fBsmtp\-sink\fR 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. + +\fBsmtp\-sink\fR 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 \fBsmtp\-source\fR(1) program. + +Note: this is an unsupported test program. No attempt is made +to maintain compatibility between successive versions. + +Arguments: +.IP \fB\-4\fR +Support IPv4 only. This option has no effect when +Postfix is built without IPv6 support. +.IP \fB\-6\fR +Support IPv6 only. This option is not available when +Postfix is built without IPv6 support. +.IP \fB\-8\fR +Do not announce 8BITMIME support. +.IP \fB\-a\fR +Do not announce SASL authentication support. +.IP "\fB\-A \fIdelay\fR" +Wait \fIdelay\fR 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. +.IP "\fB\-b \fIsoft\-bounce\-reply\fR" +Use \fIsoft\-bounce\-reply\fR for soft reject responses. The +default reply is "450 4.3.0 Error: command failed". +.IP "\fB\-B \fIhard\-bounce\-reply\fR" +Use \fIhard\-bounce\-reply\fR for hard reject responses. The +default reply is "500 5.3.0 Error: command failed". +.IP \fB\-c\fR +Display running counters that are updated whenever an SMTP +session ends, a QUIT command is executed, or when "." is +received. +.IP \fB\-C\fR +Disable XCLIENT support. +.IP "\fB\-d \fIdump\-template\fR" +Dump each mail transaction to a single\-message file whose +name is created by expanding the \fIdump\-template\fR 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. +.sp +Note: this option keeps one capture file open for every +mail transaction in progress. +.IP "\fB\-D \fIdump\-template\fR" +Append mail transactions to a multi\-message dump file whose +name is created by expanding the \fIdump\-template\fR via +strftime(3). +If the template contains "/" characters, missing directories +are created automatically. The message dump format is +described below. +.sp +Note: this option keeps one capture file open for every +mail transaction in progress. +.IP \fB\-e\fR +Do not announce ESMTP support. +.IP \fB\-E\fR +Do not announce ENHANCEDSTATUSCODES support. +.IP "\fB\-f \fIcommand,command,...\fR" +Reject the specified commands with a hard (5xx) error code. +This option implies \fB\-p\fR. +.sp +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. +.IP \fB\-F\fR +Disable XFORWARD support. +.IP "\fB\-h\fI hostname\fR" +Use \fIhostname\fR in the SMTP greeting, in the HELO response, +and in the EHLO response. The default hostname is "smtp\-sink". +.IP "\fB\-H\fI delay\fR" +Delay the first read operation after receiving DATA (time +in seconds). Combine with a large test message and a small +TCP window size (see the \fB\-T\fR option) to test the Postfix +client write_wait() implementation. +.IP \fB\-L\fR +Enable LMTP instead of SMTP. +.IP "\fB\-m \fIcount\fR (default: 256)" +An upper bound on the maximal number of simultaneous +connections that \fBsmtp\-sink\fR will handle. This prevents +the process from running out of file descriptors. Excess +connections will stay queued in the TCP/IP stack. +.IP "\fB\-M \fIcount\fR" +Terminate after receiving \fIcount\fR messages. +.IP "\fB\-n \fIcount\fR" +Terminate after \fIcount\fR sessions. +.IP \fB\-N\fR +Do not announce support for DSN. +.IP \fB\-p\fR +Do not announce support for ESMTP command pipelining. +.IP \fB\-P\fR +Change the server greeting so that it appears to come through +a CISCO PIX system. Implies \fB\-e\fR. +.IP "\fB\-q \fIcommand,command,...\fR" +Disconnect (without replying) after receiving one of the +specified commands. +.sp +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. +.IP "\fB\-Q \fIcommand,command,...\fR" +Send a 421 reply and disconnect after receiving one +of the specified commands. +.sp +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. +.IP "\fB\-r \fIcommand,command,...\fR" +Reject the specified commands with a soft (4xx) error code. +This option implies \fB\-p\fR. +.sp +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. +.IP "\fB\-R \fIroot\-directory\fR" +Change the process root directory to the specified location. +This option requires super\-user privileges. See also the +\fB\-u\fR option. +.IP "\fB\-s \fIcommand,command,...\fR" +Log the named commands to syslogd. +.sp +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. +.IP "\fB\-S start\-string\fR" +An optional string that is prepended to each message that is +written to a dump file (see the dump file format description +below). The following C escape sequences are supported: \ea +(bell), \eb (backspace), \ef (formfeed), \en (newline), \er +(carriage return), \et (horizontal tab), \ev (vertical tab), +\e\fIddd\fR (up to three octal digits) and \e\e (the backslash +character). +.IP "\fB\-t \fItimeout\fR (default: 100)" +Limit the time for receiving a command or sending a response. +The time limit is specified in seconds. +.IP "\fB\-T \fIwindowsize\fR" +Override the default TCP window size. To work around +broken TCP window scaling implementations, specify a +value > 0 and < 65536. +.IP "\fB\-u \fIusername\fR" +Switch to the specified user privileges after opening 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 \fB\-R\fR option. +.IP \fB\-v\fR +Show the SMTP conversations. +.IP "\fB\-w \fIdelay\fR" +Wait \fIdelay\fR seconds before responding to a DATA command. +.IP "\fB\-W \fIcommand:delay[:odds]\fR" +Wait \fIdelay\fR seconds before responding to \fIcommand\fR. +If \fIodds\fR is also specified (a number between 1\-99 +inclusive), wait for a random multiple of \fIdelay\fR. The +random multiplier is equal to the number of times the program +needs to roll a dice with a range of 0..99 inclusive, before +the dice produces a result greater than or equal to \fIodds\fR. +.IP [\fBinet:\fR][\fIhost\fR]:\fIport\fR +Listen on network interface \fIhost\fR (default: any interface) +TCP port \fIport\fR. Both \fIhost\fR and \fIport\fR may be +specified in numeric or symbolic form. +.IP \fBunix:\fR\fIpathname\fR +Listen on the UNIX\-domain socket at \fIpathname\fR. +.IP \fIbacklog\fR +The maximum length the queue of pending connections, +as defined by the \fBlisten\fR(2) system call. +.SH "DUMP FILE FORMAT" +.na +.nf +.ad +.fi +Each dumped message contains a sequence of text lines, +terminated with the newline character. The sequence of +information is as follows: +.IP \(bu +The optional string specified with the \fB\-S\fR option. +.IP \(bu +The \fBsmtp\-sink\fR generated headers as documented below. +.IP \(bu +The message header and body as received from the SMTP client. +.IP \(bu +An empty line. +.PP +The format of the \fBsmtp\-sink\fR generated headers is as +follows: +.IP "\fBX\-Client\-Addr: \fItext\fR" +The client IP address without enclosing []. An IPv6 address +is prefixed with "ipv6:". This record is always present. +.IP "\fBX\-Client\-Proto: \fItext\fR" +The client protocol: SMTP, ESMTP or LMTP. This record is +always present. +.IP "\fBX\-Helo\-Args: \fItext\fR" +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. +.IP "\fBX\-Mail\-Args: \fItext\fR" +The arguments of the MAIL command that started this mail +delivery transaction. This record is present exactly once. +.IP "\fBX\-Rcpt\-Args: \fItext\fR" +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. +.IP "\fBReceived: \fItext\fR" +A message header for compatibility with mail processing +software. This three\-line header marks the end of the headers +provided by \fBsmtp\-sink\fR, and is formatted as follows: +.RS +.IP "\fBfrom \fIhelo\fR ([\fIaddr\fR])" +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. +.IP "\fBby \fIhost\fB (smtp\-sink) with \fIproto\fB id \fIrandom\fB;\fR" +The hostname specified with the \fB\-h\fR option, the client +protocol (see \fBX\-Client\-Proto\fR above), and the pseudo\-random +portion of the per\-message capture file name. +.IP \fItime\-stamp\fR +A time stamp as defined in RFC 2822. +.RE +.SH "SEE ALSO" +.na +.nf +smtp\-source(1), SMTP/LMTP message generator +.SH "LICENSE" +.na +.nf +.ad +.fi +The Secure Mailer license must be distributed with this software. +.SH "AUTHOR(S)" +.na +.nf +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 |