RELOCATED(5) File Formats Manual RELOCATED(5)
relocated - format of Postfix relocated table
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 input format for the postmap(1) command is as follows:
o An entry has one of the following form:
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
Matches user@domain. This form has precedence over all other
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 prece-
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. For a description of regular
expression lookup table syntax, see regexp_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 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.
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. You need to stop and start Postfix when this parameter
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.
IBM T.J. Watson Research
P.O. Box 704
Yorktown Heights, NY 10598, USA