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RELOCATED(5)									     RELOCATED(5)

       relocated - format of Postfix relocated table

       postmap /etc/postfix/relocated

       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. In that case, the lookups are done in a slightly different
       way as described below.

       Table lookups are case insensitive.

       The format of the table is as follows:

       o      An entry has one of the following form:
		   key	new_location
	      Where new_location specifies contact information such as an email address, or  per-
	      haps 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, the key field is one of the following:

	      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.

	      Matches every address in domain. This form has the lowest precedence.

       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.

       This section describes how the table lookups change when the table is given in the form of
       regular expressions. For a description of regular expression lookup table syntax, see reg-
       exp_table(5) or pcre_table(5).

       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  con-
       stituent 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 paren-
       thesized substrings from the pattern can be interpolated as $1, $2 and so on.

       The table format does not understand quoting conventions.

       The  following  main.cf	parameters are especially relevant to this topic. See the Postfix
       main.cf file for syntax details and for default values. Use  the  postfix  reload  command
       after a configuration change.

	      List of lookup tables for relocated users or sites.

       Other parameters of interest:

	      The network interface addresses that this system receives mail on.

	      List of domains that this mail system considers local.

	      The domain that is appended to locally-posted mail.

       postmap(1) create lookup table
       pcre_table(5) format of PCRE tables
       regexp_table(5) format of POSIX regular expression tables

       The Secure Mailer license must be distributed with this software.

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

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