SYNOPSIS

       postmap /etc/postfix/relocated

DESCRIPTION

       The  optional  relocated table provides the information that is used in
       "user has moved to new_location" bounce messages.

       Normally, the relocated table is specified as a text file  that  serves
       as input to the postmap(1) command.  The result, an indexed file in dbm
       or db format, is used for fast searching by the  mail  system.  Execute
       the  command  postmap  /etc/postfix/relocated  in  order to rebuild the
       indexed file after changing the relocated table.

       When the table is provided via other means such as NIS,  LDAP  or  SQL,
       the same lookups are done as for ordinary indexed files.

       Alternatively,  the  table  can be provided as a regular-expression map
       where patterns are given as regular  expressions,  or  lookups  can  be
       directed  to  TCP-based server. In that case, the lookups are done in a
       slightly different way as described  below  under  "REGULAR  EXPRESSION
       TABLES" and "TCP-BASED TABLES".

       Table lookups are case insensitive.

TABLE FORMAT

       The input format for the postmap(1) command is as follows:

       o      An entry has one of the following form:
                   pattern      new_location
              Where  new_location  specifies  contact  information  such as an
              email address, or perhaps a street address or telephone  number.

       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.

       With  lookups  from  indexed files such as DB or DBM, or from networked
       tables such as NIS, LDAP or SQL, patterns are tried  in  the  order  as
       listed below:

       user@domain
              Matches  user@domain.  This  form  has precedence over all other
              forms.

       user   Matches user@site when site is $myorigin, when site is listed in
              $mydestination,  or  when  site is listed in $inet_interfaces or
              $proxy_interfaces.

       @domain
              Matches every address in domain. This form has the lowest prece-

       Each  pattern  is  a  regular  expression that is applied to the entire
       address being looked up. Thus, user@domain mail addresses are not  bro-
       ken  up  into their user and @domain constituent parts, nor is user+foo
       broken up into user and foo.

       Patterns are applied in the order as specified in the  table,  until  a
       pattern is found that matches the search string.

       Results  are the same as with indexed file lookups, with the additional
       feature that parenthesized substrings from the pattern can be  interpo-
       lated as $1, $2 and so on.

TCP-BASED TABLES

       This  section  describes  how the table lookups change when lookups are
       directed  to  a  TCP-based  server.  For  a  description  of  the   TCP
       client/server  lookup  protocol, see tcp_table(5).  This feature is not
       available in Postfix version 2.1.

       Each lookup operation uses the entire address once.  Thus,  user@domain
       mail  addresses  are  not  broken  up  into their user and @domain con-
       stituent parts, nor is user+foo broken up into user and foo.

       Results are the same as with indexed file lookups.

BUGS

       The table format does not understand quoting conventions.

CONFIGURATION PARAMETERS

       The following main.cf parameters are  especially  relevant.   The  text
       below  provides  only  a  parameter  summary.  See postconf(5) for more
       details including examples.

       relocated_maps
              List of lookup tables for relocated users or sites.

       Other parameters of interest:

       inet_interfaces
              The network interface addresses that this system  receives  mail
              on.   You  need  to  stop  and start Postfix when this parameter
              changes.

       mydestination
              List of domains that this mail system considers local.

       myorigin
              The domain that is appended to locally-posted mail.

       proxy_interfaces
              Other interfaces that this machine receives mail on by way of  a
              proxy agent or network address translator.

AUTHOR(S)

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



                                                                  RELOCATED(5)