POSTALIAS(1)                                         POSTALIAS(1)


NAME
       postalias - Postfix alias database maintenance

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

DESCRIPTION
       The   postalias   command  creates  a  new  Postfix  alias
       database, or rebuilds an existing one. The input and  out-
       put  file formats are expected to be compatible with Send-
       mail version 8, and are expected to be  suitable  for  the
       use as NIS alias maps.

       While a database update is in progress, signal delivery is
       postponed, and an exclusive, advisory, lock is  placed  on
       the  entire database, in order to avoid surprises in spec-
       tator programs.

       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   is   a   btree   file,  named
                     input_file.db.  This is  available  only  on
                     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  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.   The  default  value  for
              this parameter depends on the host environment.

       input_file
              The name of the alias database source file.




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POSTALIAS(1)                                         POSTALIAS(1)


DIAGNOSTICS
       Problems  are logged to the standard error stream. No out-
       put means no problems were detected. 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
       The  following  main.cf parameters are especially relevant
       to this program. See the Postfix main.cf file  for  syntax
       details and for default values.

       database_type
              Default  alias database type. On many UNIX systems,
              the default type is either dbm or hash.

STANDARDS
       RFC 822 (ARPA Internet Text Messages)

SEE ALSO
       aliases(5) format of alias database input file.
       sendmail(1) mail posting and compatibility interface.

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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