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QMQPD(8postfix) 								  QMQPD(8postfix)

NAME
       qmqpd - Postfix QMQP server

SYNOPSIS
       qmqpd [generic Postfix daemon options]

DESCRIPTION
       The  Postfix  QMQP  server  receives  one  message  per connection.  Each message is piped
       through the cleanup(8) daemon, and is placed into the incoming queue as one  single  queue
       file.  The program expects to be run from the master(8) process manager.

       The  QMQP server implements one access policy: only explicitly authorized client hosts are
       allowed to use the service.

SECURITY
       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.

DIAGNOSTICS
       Problems and transactions are logged to syslogd(8).

BUGS
       The QMQP protocol provides only one server reply per message 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.

CONFIGURATION PARAMETERS
       Changes	to main.cf are picked up automatically, as qmqpd(8) processes run for only a lim-
       ited amount of time. Use the command "postfix reload" to speed up a change.

       The text below provides only a parameter summary. See postconf(5) for more details includ-
       ing examples.

CONTENT INSPECTION CONTROLS
       content_filter (empty)
	      After  the  message  is  queued,	send  the  entire message to the specified trans-
	      port:destination.

       receive_override_options (empty)
	      Enable or disable recipient validation, built-in content filtering, or address map-
	      ping.

RESOURCE AND RATE CONTROLS
       line_length_limit(2048)
	      Upon  input,  long  lines  are  chopped up into pieces of at most this length; upon
	      delivery, long lines are reconstructed.

       hopcount_limit(50)
	      The maximal number of Received:  message headers that is	allowed  in  the  primary
	      message headers.

       message_size_limit(10240000)
	      The maximal size in bytes of a message, including envelope information.

       qmqpd_timeout(300s)
	      The time limit for sending or receiving information over the network.

TROUBLE SHOOTING CONTROLS
       debug_peer_level(2)
	      The  increment  in  verbose  logging level when a remote client or server matches a
	      pattern in the debug_peer_list parameter.

       debug_peer_list (empty)
	      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
	      $debug_peer_level.

       soft_bounce (no)
	      Safety net to keep mail queued that would otherwise be returned to the sender.

TARPIT CONTROLS
       qmqpd_error_delay(1s)
	      How long the QMQP server will pause before sending a negative reply to the client.

MISCELLANEOUS CONTROLS
       config_directory (see 'postconf -d' output)
	      The default location of the Postfix main.cf and master.cf configuration files.

       daemon_timeout(18000s)
	      How much time a Postfix daemon process may take to handle a request  before  it  is
	      terminated by a built-in watchdog timer.

       ipc_timeout(3600s)
	      The  time limit for sending or receiving information over an internal communication
	      channel.

       max_idle(100s)
	      The maximum amount of time that an idle Postfix daemon process waits for an  incom-
	      ing connection before terminating voluntarily.

       max_use(100)
	      The  maximal number of incoming connections that a Postfix daemon process will ser-
	      vice before terminating voluntarily.

       process_id (read-only)
	      The process ID of a Postfix command or daemon process.

       process_name (read-only)
	      The process name of a Postfix command or daemon process.

       qmqpd_authorized_clients (empty)
	      What clients are allowed to connect to the QMQP server port.

       queue_directory (see 'postconf -d' output)
	      The location of the Postfix top-level queue directory.

       syslog_facility (mail)
	      The syslog facility of Postfix logging.

       syslog_name (see 'postconf -d' output)
	      The mail system name that is prepended to the process name in  syslog  records,  so
	      that "smtpd" becomes, for example, "postfix/smtpd".

       verp_delimiter_filter (-=+)
	      The  characters  Postfix	accepts as VERP delimiter characters on the Postfix send-
	      mail(1) command line and in SMTP commands.

       Available in Postfix version 2.5 and later:

       qmqpd_client_port_logging (no)
	      Enable logging of the remote QMQP client port in addition to the	hostname  and  IP
	      address.

SEE ALSO
       http://cr.yp.to/proto/qmqp.html, QMQP protocol
       cleanup(8), message canonicalization
       master(8), process manager
       syslogd(8), system logging

README FILES
       Use "postconf readme_directory" or "postconf html_directory" to locate this information.
       QMQP_README, Postfix ezmlm-idx howto.

LICENSE
       The Secure Mailer license must be distributed with this software.

HISTORY
       The qmqpd service was introduced with Postfix version 1.1.

AUTHOR(S)
       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA

										  QMQPD(8postfix)
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