<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <title> Postfix manual - qmqpd(8) </title> </head> <body> <pre> QMQPD(8) QMQPD(8) <b>NAME</b> qmqpd - Postfix QMQP server <b>SYNOPSIS</b> <b>qmqpd</b> [generic Postfix daemon options] <b>DESCRIPTION</b> The Postfix QMQP server receives one message per connec- tion. Each message is piped through the <a href="cleanup.8.html"><b>cleanup</b>(8)</a> dae- mon, and is placed into the <a href="QSHAPE_README.html#incoming_queue"><b>incoming</b> queue</a> as one single queue file. The program expects to be run from the <a href="master.8.html"><b>mas-</b></a> <a href="master.8.html"><b>ter</b>(8)</a> process manager. The QMQP server implements one access policy: only explic- itly authorized client hosts are allowed to use the ser- vice. <b>SECURITY</b> The QMQP server is moderately security-sensitive. It talks to QMQP clients and to DNS servers on the network. The QMQP server can be run chrooted at fixed low privilege. <b>DIAGNOSTICS</b> Problems and transactions are logged to <b>syslogd</b>(8). <b>BUGS</b> The QMQP protocol provides only one server reply per mes- sage delivery. It is therefore not possible to reject individual recipients. The QMQP protocol requires the server to receive the entire message before replying. If a message is malformed, or if any netstring component is longer than acceptable, Postfix replies immediately and closes the connection. It is left up to the client to handle the situation. <b>CONFIGURATION PARAMETERS</b> Changes to <a href="postconf.5.html"><b>main.cf</b></a> are picked up automatically, as <a href="qmqpd.8.html"><b>qmqpd</b>(8)</a> processes run for only a limited amount of time. Use the command "<b>postfix reload</b>" to speed up a change. The text below provides only a parameter summary. See <a href="postconf.5.html"><b>postconf</b>(5)</a> for more details including examples. <b>CONTENT INSPECTION CONTROLS</b> <b><a href="postconf.5.html#content_filter">content_filter</a> (empty)</b> After the message is queued, send the entire mes- sage to the specified <i>transport:destination</i>. <b><a href="postconf.5.html#receive_override_options">receive_override_options</a> (empty)</b> Enable or disable recipient validation, built-in content filtering, or address mapping. <b>RESOURCE AND RATE CONTROLS</b> <b><a href="postconf.5.html#line_length_limit">line_length_limit</a> (2048)</b> Upon input, long lines are chopped up into pieces of at most this length; upon delivery, long lines are reconstructed. <b><a href="postconf.5.html#hopcount_limit">hopcount_limit</a> (50)</b> The maximal number of Received: message headers that is allowed in the primary message headers. <b><a href="postconf.5.html#message_size_limit">message_size_limit</a> (10240000)</b> The maximal size in bytes of a message, including envelope information. <b><a href="postconf.5.html#qmqpd_timeout">qmqpd_timeout</a> (300s)</b> The time limit for sending or receiving information over the network. <b>TROUBLE SHOOTING CONTROLS</b> <b><a href="postconf.5.html#debug_peer_level">debug_peer_level</a> (2)</b> The increment in verbose logging level when a remote client or server matches a pattern in the <a href="postconf.5.html#debug_peer_list">debug_peer_list</a> parameter. <b><a href="postconf.5.html#debug_peer_list">debug_peer_list</a> (empty)</b> Optional list of remote client or server hostname or network address patterns that cause the verbose logging level to increase by the amount specified in $<a href="postconf.5.html#debug_peer_level">debug_peer_level</a>. <b><a href="postconf.5.html#soft_bounce">soft_bounce</a> (no)</b> Safety net to keep mail queued that would otherwise be returned to the sender. <b>TARPIT CONTROLS</b> <b><a href="postconf.5.html#qmqpd_error_delay">qmqpd_error_delay</a> (1s)</b> How long the Postfix QMQP server will pause before sending a negative reply to the remote QMQP client. <b>MISCELLANEOUS CONTROLS</b> <b><a href="postconf.5.html#config_directory">config_directory</a> (see 'postconf -d' output)</b> The default location of the Postfix <a href="postconf.5.html">main.cf</a> and <a href="master.5.html">master.cf</a> configuration files. <b><a href="postconf.5.html#daemon_timeout">daemon_timeout</a> (18000s)</b> How much time a Postfix daemon process may take to handle a request before it is terminated by a built-in watchdog timer. <b><a href="postconf.5.html#ipc_timeout">ipc_timeout</a> (3600s)</b> The time limit for sending or receiving information over an internal communication channel. <b><a href="postconf.5.html#max_idle">max_idle</a> (100s)</b> The maximum amount of time that an idle Postfix daemon process waits for an incoming connection before terminating voluntarily. <b><a href="postconf.5.html#max_use">max_use</a> (100)</b> The maximal number of incoming connections that a Postfix daemon process will service before termi- nating voluntarily. <b><a href="postconf.5.html#process_id">process_id</a> (read-only)</b> The process ID of a Postfix command or daemon process. <b><a href="postconf.5.html#process_name">process_name</a> (read-only)</b> The process name of a Postfix command or daemon process. <b><a href="postconf.5.html#qmqpd_authorized_clients">qmqpd_authorized_clients</a> (empty)</b> What remote QMQP clients are allowed to connect to the Postfix QMQP server port. <b><a href="postconf.5.html#queue_directory">queue_directory</a> (see 'postconf -d' output)</b> The location of the Postfix top-level queue direc- tory. <b><a href="postconf.5.html#syslog_facility">syslog_facility</a> (mail)</b> The syslog facility of Postfix logging. <b><a href="postconf.5.html#syslog_name">syslog_name</a> (see 'postconf -d' output)</b> The mail system name that is prepended to the process name in syslog records, so that "smtpd" becomes, for example, "postfix/smtpd". <b><a href="postconf.5.html#verp_delimiter_filter">verp_delimiter_filter</a> (-=+)</b> The characters Postfix accepts as VERP delimiter characters on the Postfix <a href="sendmail.1.html"><b>sendmail</b>(1)</a> command line and in SMTP commands. Available in Postfix version 2.5 and later: <b><a href="postconf.5.html#qmqpd_client_port_logging">qmqpd_client_port_logging</a> (no)</b> Enable logging of the remote QMQP client port in addition to the hostname and IP address. <b>SEE ALSO</b> <a href="http://cr.yp.to/proto/qmqp.html">http://cr.yp.to/proto/qmqp.html</a>, QMQP protocol <a href="cleanup.8.html">cleanup(8)</a>, message canonicalization <a href="master.8.html">master(8)</a>, process manager syslogd(8), system logging <b>README FILES</b> <a href="QMQP_README.html">QMQP_README</a>, Postfix ezmlm-idx howto. <b>LICENSE</b> The Secure Mailer license must be distributed with this software. <b>HISTORY</b> The qmqpd service was introduced with Postfix version 1.1. <b>AUTHOR(S)</b> Wietse Venema IBM T.J. Watson Research P.O. Box 704 Yorktown Heights, NY 10598, USA QMQPD(8) </pre> </body> </html>