POSTCONF(1) POSTCONF(1)
NAME
postconf - Postfix configuration utility
SYNOPSIS
postconf [-dhmlnv] [-c config_dir] [parameter ...]
postconf [-ev] [-c config_dir] [parameter=value ...]
DESCRIPTION
The postconf command prints the actual value of parameter (all known
parameters by default) one parameter per line, changes its value, or
prints other information about the Postfix mail system.
Options:
-c config_dir
The main.cf configuration file is in the named directory instead
of the default configuration directory.
-d Print default parameter settings instead of actual settings.
-e Edit the main.cf 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 pro-
tect shell metacharacters and whitespace.
-h Show parameter values only, not the ``name = '' label that nor-
mally precedes the value.
-l List the names of all supported mailbox locking methods. Post-
fix supports the following methods:
flock A kernel-based advisory locking method for local files
only. This locking method is available only on systems
with a BSD compatible library.
fcntl A kernel-based advisory locking method for local and
remote files.
dotlock
An application-level locking method. An application locks
a file named filename by creating a file named file-
name.lock. The application is expected to remove its own
lock file, as well as stale lock files that were left
behind after abnormal termination.
-m List the names of all supported lookup table types. Postfix
lookup tables are specified as type:name, where type is one of
the types listed below. The table name syntax depends on the
lookup table type.
btree A sorted, balanced tree structure. This is available
only on systems with support for Berkeley DB databases.
dbm An indexed file type based on hashing. This is available
only on systems with support for DBM databases.
environ
The UNIX process environment array. The lookup key is the
variable name. Originally implemented for testing, some-
one may find this useful someday.
hash An indexed file type based on hashing. This is available
only on systems with support for Berkeley DB databases.
cdb (read-only)
An indexed file type based on hashing. This is available
only on systems with support for CDB databases.
ldap (read-only)
Perform lookups using the LDAP protocol. This is
described in an LDAP_README file.
mysql (read-only)
Perform lookups using the MYSQL protocol. This is
described in a MYSQL_README file.
pcre (read-only)
A lookup table based on Perl Compatible Regular Expres-
sions. The file format is described in pcre_table(5).
proxy (read-only)
A lookup table that is implemented via the Postfix prox-
ymap(8) service. The table name syntax is type:name.
regexp (read-only)
A lookup table based on regular expressions. The file
format is described in regexp_table(5).
static (read-only)
A table that always returns its name as lookup result.
For example, static:foobar always returns the string foo-
bar as lookup result.
unix (read-only)
A limited way to query the UNIX authentication database.
The following tables are implemented:
unix:passwd.byname
The table is the UNIX password database. The key
is a login name. The result is a password file
entry in passwd(5) format.
unix:group.byname
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.
-n Print non-default parameter settings only.
-v Enable verbose logging for debugging purposes. Multiple -v
options make the software increasingly verbose.
DIAGNOSTICS
Problems are reported to the standard error stream.
ENVIRONMENT
MAIL_CONFIG
Directory with Postfix configuration files.
LICENSE
The Secure Mailer license must be distributed with this software.
AUTHOR(S)
Wietse Venema
IBM T.J. Watson Research
P.O. Box 704
Yorktown Heights, NY 10598, USA
POSTCONF(1)