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<html> <head> </head> <body> <pre>



POSTMAP(1)                                             POSTMAP(1)


<b>NAME</b>
       postmap - Postfix lookup table management

<b>SYNOPSIS</b>
       <b>postmap</b> [<b>-Ninvw</b>] [<b>-c</b> <i>config_dir</i>] [<b>-q</b> <i>key</i>]
       [<i>file_type</i>:]<i>file_name</i> ...

<b>DESCRIPTION</b>
       The <b>postmap</b> command creates or queries one or more Postfix
       lookup  tables,  or updates an existing one. The input and
       output file formats are expected to be compatible with:

           <b>makemap</b> <i>file_type</i> <i>file_name</i> &lt; <i>file_name</i>

       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:

       <b>o</b>      Blank  lines  are  ignored.  So are lines beginning
              with `#'.

       <b>o</b>      A table entry has the form

                   <i>key</i> whitespace <i>value</i>

       <b>o</b>      A line that starts with  whitespace  continues  the
              preceding line.

       The  <i>key</i>  and  <i>value</i> 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 <i>key</i> is mapped to lowercase to make mapping
       lookups case insensitive.

       Options:

       <b>-N</b>     Include the terminating null character that  termi-
              nates  lookup  keys and values. By default, Postfix
              does whatever is the default for the host operating
              system.

       <b>-c</b> <i>config_dir</i>
              Read  the  <b>main.cf</b>  configuration file in the named
              directory.

       <b>-i</b>     Incremental mode. Read entries from standard  input
              and  do  not  truncate  an  existing  database.  By
              default, <b>postmap</b> creates a new  database  from  the
              entries in <b>file</b><i>_</i><b>name</b>.




                                                                1





POSTMAP(1)                                             POSTMAP(1)


       <b>-n</b>     Don't  include  the terminating null character that
              terminates lookup  keys  and  values.  By  default,
              Postfix  does  whatever is the default for the host
              operating system.

       <b>-q</b> <i>key</i> Search the specified maps for  <i>key</i>  and  print  the
              first  value  found  on the standard output stream.
              The exit status is non-zero if the requested infor-
              mation was not found.

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

       <b>-w</b>     Do  not  warn  about  duplicate  entries;  silently
              ignore them.

       Arguments:

       <i>file_type</i>
              The type of database to be produced.

              <b>btree</b>  The output  file  is  a  btree  file,  named
                     <i>file_name</i><b>.db</b>.   This  is  available  only on
                     systems with support for <b>db</b> databases.

              <b>dbm</b>    The output  consists  of  two  files,  named
                     <i>file_name</i><b>.pag</b>  and  <i>file_name</i><b>.dir</b>.   This is
                     available only on systems with  support  for
                     <b>dbm</b> databases.

              <b>hash</b>   The  output  file  is  a  hashed file, named
                     <i>file_name</i><b>.db</b>.  This  is  available  only  on
                     systems with support for <b>db</b> databases.

              When  no  <i>file_type</i> is specified, the software uses
              the database type specified via  the  <b>database</b><i>_</i><b>type</b>
              configuration parameter.

       <i>file_name</i>
              The  name  of  the  lookup  table  source file when
              rebuilding a database.

<b>DIAGNOSTICS</b>
       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.

<b>ENVIRONMENT</b>
       <b>MAIL</b><i>_</i><b>CONFIG</b>
              Directory with Postfix configuration files.

       <b>MAIL</b><i>_</i><b>VERBOSE</b>
              Enable verbose logging for debugging purposes.



                                                                2





POSTMAP(1)                                             POSTMAP(1)


<b>CONFIGURATION</b> <b>PARAMETERS</b>
       <b>database</b><i>_</i><b>type</b>
              Default output database type.  On  many  UNIX  sys-
              tems,  the  default database type is either <b>hash</b> or
              <b>dbm</b>.

<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










































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