Provided by: postfix_2.7.1-1_i386 bug

NAME

       postconf - Postfix configuration utility

SYNOPSIS

       postconf [-dhnv] [-c config_dir] [parameter ...]

       postconf [-aAmlv] [-c config_dir]

       postconf [-ev] [-c config_dir] [parameter=value ...]

       postconf [-#v] [-c config_dir] [parameter ...]

       postconf [-btv] [-c config_dir] [template_file]

DESCRIPTION

       The  postconf(1)  command  displays  the actual values of configuration
       parameters, changes configuration parameter values, or  displays  other
       configuration information about the Postfix mail system.

       Options:

       -a     List  the available SASL server plug-in types.  The SASL plug-in
              type  is  selected  with   the   smtpd_sasl_type   configuration
              parameter by specifying one of the names listed below.

              cyrus  This  server  plug-in  is available when Postfix is built
                     with Cyrus SASL support.

              dovecot
                     This  server  plug-in  uses  the  Dovecot  authentication
                     server,  and  is available when Postfix is built with any
                     form of SASL support.

              This feature is available with Postfix 2.3 and later.

       -A     List the available SASL client plug-in types.  The SASL  plug-in
              type  is  selected  with  the  smtp_sasl_type  or lmtp_sasl_type
              configuration parameters by specifying one of the  names  listed
              below.

              cyrus  This  client  plug-in  is available when Postfix is built
                     with Cyrus SASL support.

              This feature is available with Postfix 2.3 and later.

       -b [template_file]
              Display the message  text  that  appears  at  the  beginning  of
              delivery   status   notification   (DSN)  messages,  with  $name
              expressions replaced by actual values.  To override the built-in
              message  text, specify a template file at the end of the command
              line,  or  specify  a  template  file  in   main.cf   with   the
              bounce_template_file  parameter.   To  force  selection  of  the
              built-in message text templates, specify an empty template  file
              name (in shell language: "").

              This feature is available with Postfix 2.3 and later.

       -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
              protect shell metacharacters and whitespace.

       -h     Show  parameter  values  only,  not  the  β€˜β€˜name = ’’ label that
              normally precedes the value.

       -l     List  the  names  of  all  supported  mailbox  locking  methods.
              Postfix 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
                     filename.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
              syntax  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
                     incremental 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,
                     someone may find this useful someday.

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

              internal
                     A  non-shared, in-memory hash table. Its content are lost
                     when a process terminates.

              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
                     Expressions.    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
                     proxymap(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
                     foobar 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 the stable Postfix release.

              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.

       -t [template_file]
              Display  the  templates  for  delivery status notification (DSN)
              messages. To override the built-in templates, specify a template
              file  at the end of the command line, or specify a template file
              in main.cf with the bounce_template_file  parameter.   To  force
              selection  of  the built-in templates, specify an empty template
              file name (in shell language: "").

              This feature is available with Postfix 2.3 and later.

       -v     Enable verbose  logging  for  debugging  purposes.  Multiple  -v
              options make the software increasingly verbose.

       -#     Edit  the  main.cf  configuration  file. The file is copied to a
              temporary file then renamed into place. The parameters specified
              on  the  command  line are commented-out, so that they revert to
              their default values. Specify a list  of  parameter  names,  not
              name=value  pairs.   There is no postconf command to perform the
              reverse operation.

              This feature is available with Postfix 2.6 and later.

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
       program.

       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
              configuration files.

       bounce_template_file (empty)
              Pathname  of a configuration file with bounce message templates.

FILES

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

SEE ALSO

       bounce(5), bounce template file format
       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)