postconf



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(1) 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 β€˜β€˜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 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.  In  Postfix
              configuration  files,  lookup tables are specified as type:name,
              where type is one of the types listed below. The table name syn-
              tax  depends  on  the  lookup  table  type  as  described in the
              DATABASE_README document.

              btree  A sorted, balanced tree structure.  This is available  on
                     systems with support for Berkeley DB databases.

              cdb    A  read-optimized structure with no support for incremen-
                     tal updates.  This is available on systems  with  support
                     for CDB databases.

              cidr   A  table  that  associates  values  with Classless Inter-
                     Domain Routing (CIDR)  patterns.  This  is  described  in
                     cidr_table(5).

              dbm    An indexed file type based on hashing.  This is available
                     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
                     on systems with support for Berkeley DB databases.

              ldap (read-only)
                     Perform   lookups   using  the  LDAP  protocol.  This  is
                     described in ldap_table(5).

              mysql (read-only)
                     Perform  lookups  using  the  MYSQL  protocol.  This   is
                     described in mysql_table(5).

              pcre (read-only)
                     A  lookup  table based on Perl Compatible Regular Expres-
                     sions. The file format is described in pcre_table(5).

              pgsql (read-only)
                     Perform lookups using the PostgreSQL  protocol.  This  is
                     described in pgsql_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).

              sdbm   An indexed file type based on hashing.  This is available
                     on systems with support for SDBM databases.

              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.

              tcp (read-only)
                     Perform lookups using  a  simple  request-reply  protocol
                     that  is  described in tcp_table(5).  This feature is not
                     included with Postfix 2.2.

              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  parameter  settings  that  are not left at their built-in
              default value, because they are explicitly specified in main.cf.

       -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.


CONFIGURATION PARAMETERS

       The following main.cf parameters are especially relevant to  this  pro-
       gram.

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

       config_directory (see β€β€™postconf -dβ€β€™ output)
              The default location of the Postfix main.cf and  master.cf  con-
              figuration files.


FILES

       /etc/postfix/main.cf, Postfix configuration parameters


SEE ALSO

       postconf(5), configuration parameters


README FILES

       Use  "postconf readme_directory" or "postconf html_directory" to locate
       this information.
       DATABASE_README, Postfix lookup table overview


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)

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