diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:18:56 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:18:56 +0000 |
| commit | b7c15c31519dc44c1f691e0466badd556ffe9423 (patch) | |
| tree | f944572f288bab482a615e09af627d9a2b6727d8 /html/master.5.html | |
| parent | Initial commit. (diff) | |
| download | postfix-b7c15c31519dc44c1f691e0466badd556ffe9423.tar.xz postfix-b7c15c31519dc44c1f691e0466badd556ffe9423.zip | |
Adding upstream version 3.7.10.upstream/3.7.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'html/master.5.html')
| -rw-r--r-- | html/master.5.html | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/html/master.5.html b/html/master.5.html new file mode 100644 index 0000000..1b92426 --- /dev/null +++ b/html/master.5.html @@ -0,0 +1,261 @@ +<!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=utf-8"> +<title> Postfix manual - master(5) </title> +</head> <body> <pre> +MASTER(5) MASTER(5) + +<b>NAME</b> + master - Postfix master process configuration file format + +<b>DESCRIPTION</b> + 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, started on-demand by the <a href="master.8.html"><b>master</b>(8)</a> process. The <a href="master.5.html">master.cf</a> + 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 voluntarily after serving + <b><a href="postconf.5.html#max_use">max_use</a></b> clients, or after inactivity for <b><a href="postconf.5.html#max_idle">max_idle</a></b> or more units of + time. + + All daemons specified here must speak a Postfix-internal protocol. In + order to execute non-Postfix software use the <a href="local.8.html"><b>local</b>(8)</a>, <a href="pipe.8.html"><b>pipe</b>(8)</a> or + <a href="spawn.8.html"><b>spawn</b>(8)</a> services, or execute the software with <b>inetd</b>(8) or equivalent. + + After changing <a href="master.5.html">master.cf</a> you must execute "<b>postfix reload</b>" to reload + the configuration. + +<b>SYNTAX</b> + The general format of the <a href="master.5.html">master.cf</a> file is as follows: + + <b>o</b> Empty lines and whitespace-only lines are ignored, as are lines + whose first non-whitespace character is a `#'. + + <b>o</b> A logical line starts with non-whitespace text. A line that + starts with whitespace continues a logical line. + + <b>o</b> Each logical line defines a single Postfix service. Each ser- + vice 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 <a href="master.5.html">master.cf</a> + service definitions does not matter. + + Each logical line consists of eight fields separated by whitespace. + These are described below in the order as they appear in the <a href="master.5.html">master.cf</a> + 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. + + <b>Service name</b> + The service name syntax depends on the service type as described + next. + + <b>Service type</b> + Specify one of the following service types: + + <b>inet</b> The service listens on a TCP/IP socket and is accessible + via the network. + + The service name is specified as <i>host:port</i>, 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 (see + <b>hosts</b>(5) or <b>services</b>(5)) or in numeric form (IP address + or port number). Host information may be enclosed inside + "[]"; this form is necessary only with IPv6 addresses. + + Examples: a service named <b>127.0.0.1:smtp</b> or <b>::1:smtp</b> + receives mail via the loopback interface only; and a ser- + vice named <b>10025</b> accepts connections on TCP port 10025 + via all interfaces configured with the <b><a href="postconf.5.html#inet_interfaces">inet_interfaces</a></b> + parameter. + + Note: with Postfix version 2.2 and later specify + "<b><a href="postconf.5.html#inet_interfaces">inet_interfaces</a> = loopback-only</b>" in <a href="postconf.5.html">main.cf</a>, instead of + hard-coding loopback IP address information in <a href="master.5.html">master.cf</a> + or in <a href="postconf.5.html">main.cf</a>. + + <b>unix</b> The service listens on a UNIX-domain stream socket and is + accessible for local clients only. + + The service name is a pathname relative to the Postfix + queue directory (pathname controlled with the + <b><a href="postconf.5.html#queue_directory">queue_directory</a></b> configuration parameter in <a href="postconf.5.html">main.cf</a>). + + On Solaris 8 and earlier systems the <b>unix</b> type is imple- + mented with streams sockets. + + <b>unix-dgram</b> + The service listens on a UNIX-domain datagram socket and + is accessible for local clients only. + + The service name is a pathname relative to the Postfix + queue directory (pathname controlled with the + <b><a href="postconf.5.html#queue_directory">queue_directory</a></b> configuration parameter in <a href="postconf.5.html">main.cf</a>). + + <b>fifo</b> (obsolete) + The service listens on a FIFO (named pipe) and is acces- + sible for local clients only. + + The service name is a pathname relative to the Postfix + queue directory (pathname controlled with the + <b><a href="postconf.5.html#queue_directory">queue_directory</a></b> configuration parameter in <a href="postconf.5.html">main.cf</a>). + + <b>pass</b> The service listens on a UNIX-domain stream socket, and + is accessible to local clients only. It receives one open + connection (file descriptor passing) per connection + request. + + The service name is a pathname relative to the Postfix + queue directory (pathname controlled with the + <b><a href="postconf.5.html#queue_directory">queue_directory</a></b> configuration parameter in <a href="postconf.5.html">main.cf</a>). + + On Solaris 8 and earlier systems the <b>pass</b> type is imple- + mented with streams sockets. + + This feature is available as of Postfix version 2.5. + + <b>Private (default: y)</b> + Whether a service is internal to Postfix (pathname starts with + <b>private/</b>), or exposed through Postfix command-line tools (path- + name starts with <b>public/</b>). Internet (type <b>inet</b>) services can't + be private. + + <b>Unprivileged (default: y)</b> + Whether the service runs with root privileges or as the owner of + the Postfix system (the owner name is controlled by the + <b><a href="postconf.5.html#mail_owner">mail_owner</a></b> configuration variable in the <a href="postconf.5.html">main.cf</a> file). + + The <a href="local.8.html"><b>local</b>(8)</a>, <a href="pipe.8.html"><b>pipe</b>(8)</a>, <a href="spawn.8.html"><b>spawn</b>(8)</a>, and <a href="virtual.8.html"><b>virtual</b>(8)</a> daemons require + privileges. + + <b>Chroot (default: Postfix</b> ><b>= 3.0: n, Postfix</b> < <b>3.0: y)</b> + Whether or not the service runs chrooted to the mail queue + directory (pathname is controlled by the <b><a href="postconf.5.html#queue_directory">queue_directory</a></b> config- + uration variable in the <a href="postconf.5.html">main.cf</a> file). + + Chroot should not be used with the <a href="local.8.html"><b>local</b>(8)</a>, <a href="pipe.8.html"><b>pipe</b>(8)</a>, <a href="spawn.8.html"><b>spawn</b>(8)</a>, + and <a href="virtual.8.html"><b>virtual</b>(8)</a> daemons. Although the <a href="proxymap.8.html"><b>proxymap</b>(8)</a> server can run + chrooted, doing so defeats most of the purpose of having that + service in the first place. + + The files in the examples/chroot-setup subdirectory of the Post- + fix source show how to set up a Postfix chroot environment on a + variety of systems. See also <a href="BASIC_CONFIGURATION_README.html">BASIC_CONFIGURATION_README</a> for + issues related to running daemons chrooted. + + <b>Wake up time (default: 0)</b> + Automatically wake up the named service after the specified num- + ber 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 auto- + matic wake up. + + The <a href="pickup.8.html"><b>pickup</b>(8)</a>, <a href="qmgr.8.html"><b>qmgr</b>(8)</a> and <a href="flush.8.html"><b>flush</b>(8)</a> daemons require a wake up + timer. + + <b>Process limit (default: $<a href="postconf.5.html#default_process_limit">default_process_limit</a>)</b> + The maximum number of processes that may execute this service + simultaneously. Specify 0 for no process count limit. + + NOTE: Some Postfix services must be configured as a sin- + gle-process service (for example, <a href="qmgr.8.html"><b>qmgr</b>(8)</a>) and some services + must be configured with no process limit (for example, + <a href="cleanup.8.html"><b>cleanup</b>(8)</a>). These limits must not be changed. + + <b>Command name + arguments</b> + The command to be executed. Characters that are special to the + shell such as ">" or "|" have no special meaning here, and + quotes cannot be used to protect arguments containing white- + space. To protect whitespace, use "{" and "}" as described + below. + + The command name is relative to the Postfix daemon directory + (pathname is controlled by the <b><a href="postconf.5.html#daemon_directory">daemon_directory</a></b> configuration + variable). + + The command argument syntax for specific commands is specified + in the respective daemon manual page. + + The following command-line options have the same effect for all + daemon programs: + + <b>-D</b> Run the daemon under control by the command specified + with the <b><a href="postconf.5.html#debugger_command">debugger_command</a></b> variable in the <a href="postconf.5.html">main.cf</a> config- + uration file. See <a href="DEBUG_README.html">DEBUG_README</a> for hints and tips. + + <b>-o {</b> <i>name</i> = <i>value</i> <b>}</b> (long form, Postfix >= 3.0) + + <b>-o</b> <i>name</i>=<i>value</i> (short form) + Override the named <a href="postconf.5.html">main.cf</a> configuration parameter. The + parameter value can refer to other parameters as <i>$name</i> + etc., just like in <a href="postconf.5.html">main.cf</a>. See <a href="postconf.5.html"><b>postconf</b>(5)</a> for syntax. + + NOTE 1: With the "long form" shown above, whitespace + after "{", around "=", and before "}" is ignored, and + whitespace within the parameter value is preserved. + + NOTE 2: with the "short form" shown above, do not specify + whitespace around the "=" or in parameter values. To + specify a parameter value that contains whitespace, use + the long form described above, or use commas instead of + spaces, or specify the value in <a href="postconf.5.html">main.cf</a>. Example: + + /etc/postfix/<a href="master.5.html">master.cf</a>: + submission inet .... smtpd + -o smtpd_xxx_yyy=$submission_xxx_yyy + + /etc/postfix/<a href="postconf.5.html">main.cf</a> + submission_xxx_yyy = text with whitespace... + + NOTE 3: 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 mul- + tiple instances of Postfix, instead of configuring multi- + ple personalities via <a href="master.5.html">master.cf</a>. + + <b>-v</b> Increase the verbose logging level. Specify multiple <b>-v</b> + options to make a Postfix daemon process increasingly + verbose. + + Other command-line arguments + Specify "{" and "}" around command arguments that contain + whitespace (Postfix 3.0 and later). Whitespace after "{" + and before "}" is ignored. + +<b>SEE ALSO</b> + <a href="master.8.html">master(8)</a>, process manager + <a href="postconf.5.html">postconf(5)</a>, configuration parameters + +<b>README FILES</b> + <a href="BASIC_CONFIGURATION_README.html">BASIC_CONFIGURATION_README</a>, basic configuration + <a href="DEBUG_README.html">DEBUG_README</a>, Postfix debugging + +<b>LICENSE</b> + The Secure Mailer license must be distributed with this software. + +<b>AUTHOR(S)</b> + 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 + + Wietse Venema + Google, Inc. + 111 8th Avenue + New York, NY 10011, USA + + MASTER(5) +</pre> </body> </html> |