RELOCATED(5) 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 expres-
sions, 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:
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 logi-
cal 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:
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 recip-
ient 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 ta-
ble, 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 descrip-
tion of the TCP client/server lookup protocol, see tcp_ta-
ble(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 Post-
fix 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 transla-
tor.
SEE ALSO
trivial-rewrite(8), address resolver
postmap(1), Postfix lookup table manager
postconf(5), configuration parameters
README FILES
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
RELOCATED(5)