bionic (5) relocated.5.gz

Provided by: postfix_3.3.0-1ubuntu0.4_amd64 bug

NAME

       relocated - Postfix relocated table format

SYNOPSIS

       postmap /etc/postfix/relocated

DESCRIPTION

       The optional relocated(5) table provides the information that is used in "user has moved to new_location"
       bounce messages.

       Normally, the relocated(5) 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" to  rebuild  an  indexed  file  after  changing  the
       corresponding 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 those case, the lookups are done in a
       slightly different way as described below under "REGULAR EXPRESSION TABLES" or "TCP-BASED TABLES".

       Table lookups are case insensitive.

CASE FOLDING

       The search string is folded to lowercase before database lookup. As of Postfix 2.3, the search string  is
       not case folded with database types such as regexp: or pcre: whose lookup fields can match both upper and
       lower case.

TABLE FORMAT

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

       •      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.

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

       •      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 other addresses in domain. This form has the lowest precedence.

ADDRESS EXTENSION

       When  a  mail  address  localpart  contains the optional recipient delimiter (e.g., user+foo@domain), the
       lookup order becomes: user+foo@domain, user@domain, user+foo, user, and @domain.

REGULAR EXPRESSION TABLES

       This section describes how the table lookups change when the table  is  given  in  the  form  of  regular
       expressions  or  when lookups are directed to a TCP-based server. For a description of regular expression
       lookup table syntax, see regexp_table(5) or pcre_table(5). For a description  of  the  TCP  client/server
       table  lookup  protocol,  see  tcp_table(5).   This  feature is not available up to and including Postfix
       version 2.4.

       Each pattern is a regular expression that is applied  to  the  entire  address  being  looked  up.  Thus,
       user@domain  mail  addresses  are  not  broken  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 interpolated 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
       up to and including Postfix version 2.4.

       Each lookup operation uses the entire address once.  Thus, user@domain mail addresses are not  broken  up
       into their user and @domain constituent 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.

SEE ALSO

       trivial-rewrite(8), address resolver
       postmap(1), Postfix lookup table manager
       postconf(5), configuration parameters

README FILES

       Use "postconf readme_directory" or "postconf html_directory" to locate this information.
       DATABASE_README, Postfix lookup table overview
       ADDRESS_REWRITING_README, address rewriting guide

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

       Wietse Venema
       Google, Inc.
       111 8th Avenue
       New York, NY 10011, USA

                                                                                                    RELOCATED(5)