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mt
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objcopy
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ocsp
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onintr
open
openssl
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options
oqmgr
pack
package
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perl56delta
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yes
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yyfix
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zdiff
zegrep
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zforce
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zmore
znew
_exit
__syscall
 
FreeBSD/Linux/UNIX General Commands Manual
Hypertext Man Pages
postmap
 
POSTMAP(1)							    POSTMAP(1)



NAME
       postmap - Postfix lookup table management

SYNOPSIS
       postmap [-Nfinoprsvw] [-c config_dir] [-d key] [-q key]
	       [file_type:]file_name ...

DESCRIPTION
       The  postmap(1)	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:

	   makemap file_type file_name < file_name

       If  the	result	files  do not exist they will be created with the same
       group and other read permissions as the source 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.

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

       o      A table entry has the form

		   key whitespace value

       o      Empty lines and whitespace-only lines are ignored, as are  lines
	      whose first non-whitespace character is a `#'.

       o      A  logical  line	starts	with  non-whitespace text. A line that
	      starts with whitespace continues a logical line.

       The key and value are processed as is, except  that  surrounding  white
       space is stripped off. Unlike with Postfix alias databases, quotes can-
       not 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.

COMMAND-LINE ARGUMENTS
       -c config_dir
	      Read the main.cf	configuration  file  in  the  named  directory
	      instead of the default configuration directory.

       -d key Search  the specified maps for key and remove one entry per map.
	      The exit status is  zero	when  the  requested  information  was
	      found.

	      If  a  key value of - is specified, the program reads key values
	      from the standard input stream. The exit status is zero when  at
	      least one of the requested keys was found.

       -f     Do  not  fold  the  lookup  key  to lower case while creating or
	      querying a map.

       -i     Incremental mode. Read entries from standard input  and  do  not
	      truncate	an existing database. By default, postmap(1) creates a
	      new database from the entries in file_name.

       -N     Include the terminating null character  that  terminates	lookup
	      keys  and  values.  By  default, postmap(1) does whatever is the
	      default for the host operating system.

       -n     Don't include the terminating  null  character  that  terminates
	      lookup  keys and values. By default, postmap(1) does whatever is
	      the default for the host operating system.

       -o     Do not release root privileges when processing a non-root  input
	      file.  By  default, postmap(1) drops root privileges and runs as
	      the source file owner instead.

       -p     Do not inherit the file access permissions from the  input  file
	      when  creating  a  new  file.   Instead,	create a new file with
	      default access permissions (mode 0644).

       -q key Search the specified maps for key  and  write  the  first  value
	      found  to  the  standard	output stream. The exit status is zero
	      when the requested information was found.

	      If a key value of - is specified, the program reads  key	values
	      from  the standard input stream and writes one line of key value
	      output for each key that was found. The exit status is zero when
	      at least one of the requested keys was found.

       -r     When  updating a table, do not complain about attempts to update
	      existing entries, and make those updates anyway.

       -s     Retrieve all database elements, and write one line of key  value
	      output  for  each  element. The elements are printed in database
	      order, which is not necessarily the same as the  original  input
	      order.   This  feature  is  available in Postfix version 2.2 and
	      later, and is not available for all database types.

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

       -w     When  updating a table, do not complain about attempts to update
	      existing entries, and ignore those attempts.

       Arguments:

       file_type
	      The database type. To find out what types are supported, use the
	      "postconf -m" command.

	      The postmap(1) command can query any supported file type, but it
	      can create only the following file types:

	      btree  The output file is  a  btree  file,  named  file_name.db.
		     This  is  available  on systems with support for db data-
		     bases.

	      cdb    The output consists of  one  file,  named	file_name.cdb.
		     This  is  available on systems with support for cdb data-
		     bases.

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

	      hash   The output file is a  hashed  file,  named  file_name.db.
		     This  is  available  on systems with support for db data-
		     bases.

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

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

       file_name
	      The name of the lookup table source file when rebuilding a data-
	      base.

DIAGNOSTICS
       Problems are logged to the standard error stream and to syslogd(8).  No
       output means that no problems  were  detected.  Duplicate  entries  are
       skipped and are flagged with a warning.

       postmap(1) terminates with zero exit status in case of success (includ-
       ing successful "postmap -q" lookup) and terminates with	non-zero  exit
       status in case of failure.

ENVIRONMENT
       MAIL_CONFIG
	      Directory with Postfix configuration files.

       MAIL_VERBOSE
	      Enable verbose logging for debugging purposes.

CONFIGURATION PARAMETERS
       The  following  main.cf parameters are especially relevant to this pro-
       gram.  The text below provides only  a  parameter  summary.  See  post-
       conf(5) for more details including examples.

       berkeley_db_create_buffer_size (16777216)
	      The  per-table I/O buffer size for programs that create Berkeley
	      DB hash or btree tables.

       berkeley_db_read_buffer_size (131072)
	      The per-table I/O buffer size for programs that read Berkeley DB
	      hash or btree tables.

       config_directory (see 'postconf -d' output)
	      The  default  location of the Postfix main.cf and master.cf con-
	      figuration files.

       default_database_type (see 'postconf -d' output)
	      The default database type for use in newaliases(1), postalias(1)
	      and postmap(1) commands.

       syslog_facility (mail)
	      The syslog facility of Postfix logging.

       syslog_name (postfix)
	      The  mail  system  name that is prepended to the process name in
	      syslog records, so that "smtpd"  becomes,  for  example,	"post-
	      fix/smtpd".

SEE ALSO
       postalias(1), create/update/query alias database
       postconf(1), supported database types
       postconf(5), configuration parameters
       syslogd(8), system logging

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



								    POSTMAP(1)
=19689
+1007
(89)