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<html> <head> </head> <body> <pre>
POSTCONF(1) POSTCONF(1)
<b>NAME</b>
postconf - Postfix configuration utility
<b>SYNOPSIS</b>
<b>postconf</b> [<b>-dhmlnv</b>] [<b>-c</b> <i>config_dir</i>] [<i>parameter</i> <i>...</i>]
<b>postconf</b> [<b>-ev</b>] [<b>-c</b> <i>config_dir</i>] [<i>parameter=value</i> <i>...</i>]
<b>DESCRIPTION</b>
The <b>postconf</b> command prints the actual value of <i>parameter</i>
(all known parameters by default) one parameter per line,
changes its value, or prints other information about the
Postfix mail system.
Options:
<b>-c</b> <i>config_dir</i>
The <b>main.cf</b> configuration file is in the named
directory instead of the default configuration
directory.
<b>-d</b> Print default parameter settings instead of actual
settings.
<b>-e</b> Edit the <b>main.cf</b> configuration file. The file is
copied to a temporary file then renamed into place.
Parameters and values are specified on the command
line. Use quotes in order to protect shell
metacharacters and whitespace.
<b>-h</b> Show parameter values only, not the ``name = ''
label that normally precedes the value.
<b>-l</b> List the names of all supported mailbox locking
methods. Postfix supports the following methods:
<b>flock</b> A kernel-based advisory locking method for
local files only. This locking method is
available only on systems with a BSD compat-
ible library.
<b>fcntl</b> A kernel-based advisory locking method for
local and remote files.
<b>dotlock</b>
An application-level locking method. An
application locks a file named <i>filename</i> by
creating a file named <i>filename</i><b>.lock</b>. The
application is expected to remove its own
lock file, as well as stale lock files that
were left behind after abnormal termination.
<b>-m</b> List the names of all supported lookup table types.
Postfix lookup tables are specified as <i>type</i><b>:</b><i>name</i>,
where <i>type</i> is one of the types listed below. The
table <i>name</i> syntax depends on the lookup table type.
<b>btree</b> A sorted, balanced tree structure. This is
available only on systems with support for
Berkeley DB databases.
<b>dbm</b> An indexed file type based on hashing. This
is available only on systems with support
for DBM databases.
<b>environ</b>
The UNIX process environment array. The
lookup key is the variable name. Originally
implemented for testing, someone may find
this useful someday.
<b>hash</b> An indexed file type based on hashing. This
is available only on systems with support
for Berkeley DB databases.
<b>ldap</b> (read-only)
Perform lookups using the LDAP protocol.
This is described in an LDAP_README file.
<b>mysql</b> (read-only)
Perform lookups using the MYSQL protocol.
This is described in a MYSQL_README file.
<b>pcre</b> (read-only)
A lookup table based on Perl Compatible Reg-
ular Expressions. The file format is
described in <a href="pcre_table.5.html"><b>pcre</b><i>_</i><b>table</b>(5)</a>.
<b>proxy</b> (read-only)
A lookup table that is implemented via the
Postfix <a href="proxymap.8.html"><b>proxymap</b>(8)</a> service. The table name
syntax is <i>type</i><b>:</b><i>name</i>.
<b>regexp</b> (read-only)
A lookup table based on regular expressions.
The file format is described in <a href="regexp_table.5.html"><b>reg-</b>
<b>exp</b><i>_</i><b>table</b>(5)</a>.
<b>static</b> (read-only)
A table that always returns its name as
lookup result. For example, <b>static:foobar</b>
always returns the string <b>foobar</b> as lookup
result.
<b>unix</b> (read-only)
A limited way to query the UNIX authentica-
tion database. The following tables are
implemented:
<b>unix:passwd.byname</b>
The table is the UNIX password
database. The key is a login name.
The result is a password file entry
in passwd(5) format.
<b>unix:group.byname</b>
The table is the UNIX group
database. The key is a group name.
The result is a group file entry in
group(5) format.
Other table types may exist depending on how Postfix was
built.
<b>-n</b> Print non-default parameter settings only.
<b>-v</b> Enable verbose logging for debugging purposes. Mul-
tiple <b>-v</b> options make the software increasingly
verbose.
<b>DIAGNOSTICS</b>
Problems are reported to the standard error stream.
<b>ENVIRONMENT</b>
<b>MAIL</b><i>_</i><b>CONFIG</b>
Directory with Postfix configuration files.
<b>LICENSE</b>
The Secure Mailer license must be distributed with this
software.
<b>AUTHOR(S)</b>
Wietse Venema
IBM T.J. Watson Research
P.O. Box 704
Yorktown Heights, NY 10598, USA
POSTCONF(1)
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