NetBSD/gnu/dist/postfix/proto/master
2006-08-27 00:37:46 +00:00

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#++
# NAME
# master 5
# SUMMARY
# Postfix master process configuration file format
# DESCRIPTION
# The Postfix mail system is implemented by small number of
# (mostly) client commands that are invoked by users, and by
# a larger number of services that run in the background.
#
# Postfix services are implemented by daemon processes. These
# run in the background under control of the \fBmaster\fR(8)
# process. The master.cf configuration file defines how a
# client program connects to a service, and what daemon
# program runs when a service is requested. Most daemon
# processes are short-lived and terminate after serving
# \fBmax_use\fR clients, or after inactivity for \fBmax_idle\fR
# or more units of time.
#
# All daemons specified here must speak a Postfix-internal
# protocol. In order to execute non-Postfix software use the
# \fBlocal\fR(8), \fBpipe\fR(8) or \fBspawn\fR(8) services, or
# run the server under control by \fBinetd\fR(8) or equivalent.
# .PP
# After changing master.cf you must execute "\fBpostfix reload\fR"
# to reload the configuration.
# SYNTAX
# .ad
# .fi
# The general format of the master.cf file is as follows:
# .IP \(bu
# Each logical line defines a single Postfix service.
# Each service is identified by its name and type as described
# below. When multiple lines specify the same service name
# and type, only the last one is remembered. Otherwise, the
# order of master.cf service definitions does not matter.
# .IP \(bu
# Empty lines and whitespace-only lines are ignored, as are
# lines whose first non-whitespace character is a `#'.
# .IP \(bu
# A logical line starts with non-whitespace text. A line that
# starts with whitespace continues a logical line.
# .PP
# Each logical line consists of eight fields separated by
# whitespace. These are described below in the order as they
# appear in the master.cf file.
#
# Where applicable a field of "-" requests that the built-in
# default value be used. For boolean fields specify "y" or
# "n" to override the default value.
# .IP "\fBService name\fR"
# The service name syntax depends on the service type as
# described next.
# .IP "\fBService type\fR"
# Specify one of the following service types:
# .RS
# .IP \fBinet\fR
# The service listens on a TCP/IP socket and is accessible
# via the network.
#
# The service name is specified as \fIhost:port\fR, denoting
# the host and port on which new connections should be
# accepted. The host part (and colon) may be omitted. Either
# host or port may be given in symbolic form (host or service
# name) or in numeric form (IP address or port number).
# Host information may be enclosed inside "[]", but this form
# is not necessary.
# .sp
# Examples: a service named \fB127.0.0.1:smtp\fR or \fB::1:smtp\fR
# receives
# mail via the loopback interface only; and a service named
# \fB10025\fR accepts connections on TCP port 10025 via
# all interfaces configured with the \fBinet_interfaces\fR
# parameter.
#
# .sp
# Note: with Postfix version 2.2 and later specify
# "\fBinet_interfaces = loopback-only\fR" in main.cf, instead
# of hard-coding loopback IP address information in master.cf
# or in main.cf.
# .IP \fBunix\fR
# The service listens on a UNIX-domain socket and is accessible
# for local clients only.
#
# The service name is a pathname relative to the Postfix
# queue directory (pathname controlled with the \fBqueue_directory\fR
# configuration parameter in main.cf).
# .sp
# On Solaris systems the \fBunix\fR type is implemented with
# streams sockets.
# .IP \fBfifo\fR
# The service listens on a FIFO (named pipe) and is accessible
# for local clients only.
#
# The service name is a pathname relative to the Postfix
# queue directory (pathname controlled with the \fBqueue_directory\fR
# configuration parameter in main.cf).
# .RE
# .IP "\fBPrivate (default: y)\fR"
# Whether or not access is restricted to the mail system.
# Internet (type \fBinet\fR) services can't be private.
# .IP "\fBUnprivileged (default: y)\fR"
# Whether the service runs with root privileges or as the
# owner of the Postfix system (the owner name is controlled
# by the \fBmail_owner\fR configuration variable in the
# main.cf file).
# .sp
# The \fBlocal\fR(8), \fBpipe\fR(8), \fBspawn\fR(8), and
# \fBvirtual\fR(8) daemons require privileges.
# .IP "\fBChroot (default: y)\fR"
# Whether or not the service runs chrooted to the mail queue
# directory (pathname is controlled by the \fBqueue_directory\fR
# configuration variable in the main.cf file).
# .sp
# Chroot should not be used with the \fBlocal\fR(8),
# \fBpipe\fR(8), \fBspawn\fR(8), and \fBvirtual\fR(8) daemons.
# Although the
# \fBproxymap\fR(8) server can run chrooted, doing so defeats
# most of the purpose of having that service in the first
# place.
# .sp
# The files in the examples/chroot-setup subdirectory of the
# Postfix source archive show set up a Postfix chroot environment
# on a variety of systems. See also BASIC_CONFIGURATION_README
# for issues related to running daemons chrooted.
# .IP "\fBWake up time (default: 0)\fR"
# Automatically wake up the named service after the specified
# number of seconds. The wake up is implemented by connecting
# to the service and sending a wake up request. A ? at the
# end of the wake-up time field requests that no wake up
# events be sent before the first time a service is used.
# Specify 0 for no automatic wake up.
# .sp
# The \fBpickup\fR(8), \fBqmgr\fR(8) and \fBflush\fR(8)
# daemons require a wake up timer.
# .IP "\fBProcess limit (default: $default_process_limit)\fR"
# The maximum number of processes that may execute this
# service simultaneously. Specify 0 for no process count limit.
# .sp
# NOTE: Some Postfix services must be configured as a
# single-process service (for example, \fBqmgr\fR(8)) and
# some services must be configured with no process limit (for
# example, \fBcleanup\fR(8)). These limits must not be
# changed.
# .IP "\fBCommand name + arguments\fR"
# The command to be executed. Characters that are special
# to the shell such as ">" or "|" have no special meaning
# here, and quotes cannot be used to protect arguments
# containing whitespace.
# .sp
# The command name is relative to the Postfix daemon directory
# (pathname is controlled by the \fBdaemon_directory\fR
# configuration variable).
# .sp
# The command argument syntax for specific commands is
# specified in the respective daemon manual page.
# .sp
# The following command-line options have the same effect for
# all daemon programs:
# .RS
# .IP \fB-D\fR
# Run the daemon under control by the command specified with
# the \fBdebugger_command\fR variable in the main.cf
# configuration file. See DEBUG_README for hints and tips.
# .IP "\fB-o \fIname\fR=\fIvalue\fR"
# Override the named main.cf configuration parameter. The
# parameter value can refer to other parameters as \fI$name\fR
# etc., just like in main.cf. See \fBpostconf\fR(5) for
# syntax.
# .sp
# NOTE 1: do not specify whitespace around the "=". In parameter
# values, either avoid whitespace altogether, use commas
# instead of spaces, or consider overrides like "-o
# name=$override_parameter" with $override_parameter set in
# main.cf.
# .sp
# NOTE 2: Over-zealous use of parameter overrides makes the
# Postfix configuration hard to understand and maintain. At
# a certain point, it might be easier to configure multiple
# instances of Postfix, instead of configuring multiple
# personalities via master.cf.
# .IP \fB-v\fR
# Increase the verbose logging level. Specify multiple \fB-v\fR
# options to make a Postfix daemon process increasingly verbose.
# SEE ALSO
# master(8), process manager
# postconf(5), configuration parameters
# README FILES
# .ad
# .fi
# Use "\fBpostconf readme_directory\fR" or
# "\fBpostconf html_directory\fR" to locate this information.
# .na
# .nf
# BASIC_CONFIGURATION_README, basic configuration
# DEBUG_README, Postfix debugging
# LICENSE
# .ad
# .fi
# The Secure Mailer license must be distributed with this software.
# AUTHOR(S)
# Initial version by
# Magnus Baeck
# Lund Institute of Technology
# Sweden
#
# Wietse Venema
# IBM T.J. Watson Research
# P.O. Box 704
# Yorktown Heights, NY 10598, USA
#--