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  3. postfix
  4. relocated(5)

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RELOCATED(5) File Formats Manual RELOCATED(5)

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.
    • 







TABLE SEARCH ORDER




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:



  

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

  

  
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.



  

  
List of lookup tables for relocated users or sites.




Other parameters of interest:



  

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

  

  
List of domains that this mail system considers local.

  

  
The domain that is appended to locally-posted mail.

  

  
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