POSTMAP(1)                                             POSTMAP(1)


NAME
       postmap - Postfix lookup table management

SYNOPSIS
       postmap [-c config_dir] [-v] [file_type:]input_file

DESCRIPTION
       The postmap command creates a new Postfix lookup table, or
       rewrites an existing one. The input and output formats are
       expected to be compatible with:

           makemap file_type input_file < input_file

       While  the table update is in progress, signal delivery is
       postponed, and an exclusive, advisory, lock is  placed  on
       the entire table, in order to avoid surprises in spectator
       programs.

       The format of a lookup table input file is as follows:

       o      Blank lines are ignored.  So  are  lines  beginning
              with `#'.

       o      A table entry has the form

                   key whitespace value

       o      A  line  that  starts with whitespace continues the
              preceding line.

       The key and value are processed as is,  except  that  sur-
       rounding  white space is stripped off. Unlike with Postfix
       alias databases, quotes cannot be used to  protect  lookup
       keys  that  contain  special  characters  such  as  `#' or
       whitespace. The key is mapped to lowercase to make mapping
       lookups case insensitive.

       Options:

       -c config_dir
              Read  the  main.cf  configuration file in the named
              directory.

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

       Arguments:

       file_type
              The type of database to be produced.

              btree  The output  file  is  a  btree  file,  named
                     input_file.db.   This  is  available only on



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POSTMAP(1)                                             POSTMAP(1)


                     systems with support for db databases.

              dbm    The output  consists  of  two  files,  named
                     input_file.pag  and input_file.dir.  This is
                     available only on systems with  support  for
                     dbm databases.

              hash   The  output  file  is  a  hashed file, named
                     input_file.db.  This is  available  only  on
                     systems with support for db databases.

              When  no  file_type is specified, the software uses
              the database type specified via  the  database_type
              configuration parameter.

       input_file
              The name of the lookup table source file.

DIAGNOSTICS
       Problems and transactions are logged to the standard error
       stream. No output means no problems. Duplicate entries are
       skipped and are flagged with a warning.

ENVIRONMENT
       MAIL_CONFIG
              Mail configuration database

       MAIL_VERBOSE
              Enable verbose logging for debugging purposes.

CONFIGURATION PARAMETERS
       database_type
              Default  output  database  type.  On many UNIX sys-
              tems, the default database type is either  hash  or
              dbm.

LICENSE
       See  the  Postfix  LICENSE, which must be distributed with
       this software.

AUTHOR(S)
       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA












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