341 lines
13 KiB
Plaintext
341 lines
13 KiB
Plaintext
#++
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# NAME
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# pgsql_table 5
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# SUMMARY
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# Postfix PostgreSQL client configuration
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# SYNOPSIS
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# \fBpostmap -q "\fIstring\fB" pgsql:/etc/postfix/filename\fR
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#
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# \fBpostmap -q - pgsql:/etc/postfix/\fIfilename\fR <\fIinputfile\fR
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# DESCRIPTION
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# The Postfix mail system uses optional tables for address
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# rewriting or mail routing. These tables are usually in
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# \fBdbm\fR or \fBdb\fR format.
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#
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# Alternatively, lookup tables can be specified as PostgreSQL
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# databases. In order to use PostgreSQL lookups, define a
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# PostgreSQL source as a lookup table in main.cf, for example:
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# .ti +4
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# alias_maps = pgsql:/etc/pgsql-aliases.cf
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#
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# The file /etc/postfix/pgsql-aliases.cf has the same format as
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# the Postfix main.cf file, and can specify the parameters
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# described below.
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# BACKWARDS COMPATIBILITY
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# .ad
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# .fi
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# For compatibility with other Postfix lookup tables, PostgreSQL
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# parameters can also be defined in main.cf. In order to do
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# that, specify as PostgreSQL source a name that doesn't begin
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# with a slash or a dot. The PostgreSQL parameters will then
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# be accessible as the name you've given the source in its
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# definition, an underscore, and the name of the parameter. For
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# example, if the map is specified as "pgsql:\fIpgsqlname\fR",
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# the parameter "hosts" below would be defined in main.cf as
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# "\fIpgsqlname\fR_hosts".
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#
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# Note: with this form, the passwords for the PostgreSQL sources
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# are written in main.cf, which is normally world-readable.
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# Support for this form will be removed in a future Postfix
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# version.
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#
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# Postfix 2.2 has enhanced query interfaces for MySQL and PostgreSQL,
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# these include features previously available only in the Postfix
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# LDAP client. In the new interface the SQL query is specified via
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# a single \fBquery\fR parameter (described in more detail below).
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# In Postfix 2.1 the parameter precedence was, from highest to lowest,
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# \fBselect_function\fR, \fBquery\fR and finally \fBselect_field\fR, ...
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#
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# With Postfix 2.2 the \fBquery\fR parameter has highest precedence,
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# and is used in preference to the still supported, but slated to be
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# phased out, \fBselect_function\fR, \fBselect_field\fR, \fBtable\fR,
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# \fBwhere_field\fR and \fBadditional_conditions\fR parameters. To
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# migrate to the new interface set:
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#
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# .ti +4
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# \fBquery\fR = SELECT \fIselect_function\fR('%s')
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#
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# or in the absence of \fBselection_function\fR, the lower precedence:
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#
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# .ti +4
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# \fBquery\fR = SELECT \fIselect_field\fR
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# .ti +8
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# FROM \fItable\fR
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# .ti +8
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# WHERE \fIwhere_field\fR = '%s'
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# .ti +12
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# \fIadditional_conditions\fR
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#
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# Use the value, not the name, of each legacy parameter. Note
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# that the \fBadditional_conditions\fR parameter is optional
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# and if not empty, will always start with \fBAND\fR.
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# LIST MEMBERSHIP
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# .ad
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# .fi
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# When using SQL to store lists such as $mynetworks,
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# $mydestination, $relay_domains, $local_recipient_maps,
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# etc., it is important to understand that the table must
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# store each list member as a separate key. The table lookup
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# verifies the *existence* of the key. See "Postfix lists
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# versus tables" in the DATABASE_README document for a
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# discussion.
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#
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# Do NOT create tables that return the full list of domains
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# in $mydestination or $relay_domains etc., or IP addresses
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# in $mynetworks.
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#
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# DO create tables with each matching item as a key and with
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# an arbitrary value. With SQL databases it is not uncommon to
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# return the key itself or a constant value.
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# PGSQL PARAMETERS
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# .ad
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# .fi
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# .IP "\fBhosts\fR"
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# The hosts that Postfix will try to connect to and query from.
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# Specify \fIunix:\fR for UNIX-domain sockets, \fIinet:\fR for TCP
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# connections (default). Example:
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# .ti +4
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# hosts = host1.some.domain host2.some.domain
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# .ti +4
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# hosts = unix:/file/name
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#
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# The hosts are tried in random order, with all connections over
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# UNIX domain sockets being tried before those over TCP. The
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# connections are automatically closed after being idle for about
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# 1 minute, and are re-opened as necessary.
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#
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# NOTE: the \fIunix:\fR and \fIinet:\fR prefixes are accepted for
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# backwards compatibility reasons, but are actually ignored.
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# The PostgreSQL client library will always try to connect to an
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# UNIX socket if the name starts with a slash, and will try a TCP
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# connection otherwise.
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# .IP "\fBuser, password\fR"
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# The user name and password to log into the pgsql server.
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# Example:
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# .in +4
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# user = someone
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# .br
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# password = some_password
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# .in -4
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# .IP "\fBdbname\fR"
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# The database name on the servers. Example:
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# .ti +4
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# dbname = customer_database
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# .IP "\fBquery\fR"
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# The SQL query template used to search the database, where \fB%s\fR
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# is a substitute for the address Postfix is trying to resolve,
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# e.g.
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# .ti +4
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# query = SELECT replacement FROM aliases WHERE mailbox = '%s'
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#
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# This parameter supports the following '%' expansions:
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# .RS
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# .IP "\fB\fB%%\fR\fR"
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# This is replaced by a literal '%' character. (Postfix 2.2 and later)
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# .IP "\fB\fB%s\fR\fR"
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# This is replaced by the input key.
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# SQL quoting is used to make sure that the input key does not
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# add unexpected metacharacters.
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# .IP "\fB\fB%u\fR\fR"
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# When the input key is an address of the form user@domain, \fB%u\fR
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# is replaced by the SQL quoted local part of the address.
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# Otherwise, \fB%u\fR is replaced by the entire search string.
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# If the localpart is empty, the query is suppressed and returns
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# no results.
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# .IP "\fB\fB%d\fR\fR"
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# When the input key is an address of the form user@domain, \fB%d\fR
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# is replaced by the SQL quoted domain part of the address.
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# Otherwise, the query is suppressed and returns no results.
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# .IP "\fB\fB%[SUD]\fR\fR"
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# The upper-case equivalents of the above expansions behave in the
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# \fBquery\fR parameter identically to their lower-case counter-parts.
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# With the \fBresult_format\fR parameter (see below), they expand the
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# input key rather than the result value.
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# .IP
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# The above %S, %U and %D expansions are available with Postfix 2.2
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# and later
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# .IP "\fB\fB%[1-9]\fR\fR"
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# The patterns %1, %2, ... %9 are replaced by the corresponding
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# most significant component of the input key's domain. If the
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# input key is \fIuser@mail.example.com\fR, then %1 is \fBcom\fR,
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# %2 is \fBexample\fR and %3 is \fBmail\fR. If the input key is
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# unqualified or does not have enough domain components to satisfy
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# all the specified patterns, the query is suppressed and returns
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# no results.
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# .IP
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# The above %1, ... %9 expansions are available with Postfix 2.2
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# and later
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# .RE
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# .IP
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# The \fBdomain\fR parameter described below limits the input
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# keys to addresses in matching domains. When the \fBdomain\fR
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# parameter is non-empty, SQL queries for unqualified addresses
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# or addresses in non-matching domains are suppressed
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# and return no results.
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#
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# The precedence of this parameter has changed with Postfix 2.2,
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# in prior releases the precedence was, from highest to lowest,
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# \fBselect_function\fR, \fBquery\fR, \fBselect_field\fR, ...
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#
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# With Postfix 2.2 the \fBquery\fR parameter has highest precedence,
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# see COMPATIBILITY above.
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#
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# NOTE: DO NOT put quotes around the \fBquery\fR parameter.
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# .IP "\fBresult_format (default: \fB%s\fR)\fR"
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# Format template applied to result attributes. Most commonly used
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# to append (or prepend) text to the result. This parameter supports
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# the following '%' expansions:
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# .RS
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# .IP "\fB\fB%%\fR\fR"
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# This is replaced by a literal '%' character.
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# .IP "\fB\fB%s\fR\fR"
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# This is replaced by the value of the result attribute. When
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# result is empty it is skipped.
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# .IP "\fB%u\fR
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# When the result attribute value is an address of the form
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# user@domain, \fB%u\fR is replaced by the local part of the
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# address. When the result has an empty localpart it is skipped.
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# .IP "\fB\fB%d\fR\fR"
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# When a result attribute value is an address of the form
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# user@domain, \fB%d\fR is replaced by the domain part of
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# the attribute value. When the result is unqualified it
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# is skipped.
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# .IP "\fB\fB%[SUD1-9]\fR\fB"
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# The upper-case and decimal digit expansions interpolate
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# the parts of the input key rather than the result. Their
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# behavior is identical to that described with \fBquery\fR,
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# and in fact because the input key is known in advance, queries
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# whose key does not contain all the information specified in
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# the result template are suppressed and return no results.
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# .RE
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# .IP
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# For example, using "result_format = smtp:[%s]" allows one
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# to use a mailHost attribute as the basis of a transport(5)
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# table. After applying the result format, multiple values
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# are concatenated as comma separated strings. The expansion_limit
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# and parameter explained below allows one to restrict the number
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# of values in the result, which is especially useful for maps that
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# must return at most one value.
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#
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# The default value \fB%s\fR specifies that each result value should
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# be used as is.
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#
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# This parameter is available with Postfix 2.2 and later.
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#
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# NOTE: DO NOT put quotes around the result format!
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# .IP "\fBdomain (default: no domain list)\fR"
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# This is a list of domain names, paths to files, or
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# dictionaries. When specified, only fully qualified search
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# keys with a *non-empty* localpart and a matching domain
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# are eligible for lookup: 'user' lookups, bare domain lookups
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# and "@domain" lookups are not performed. This can significantly
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# reduce the query load on the PostgreSQL server.
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# .ti +4
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# domain = postfix.org, hash:/etc/postfix/searchdomains
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#
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# It is best not to use SQL to store the domains eligible
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# for SQL lookups.
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#
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# This parameter is available with Postfix 2.2 and later.
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#
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# NOTE: DO NOT define this parameter for local(8) aliases,
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# because the input keys are always unqualified.
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# .IP "\fBexpansion_limit (default: 0)\fR"
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# A limit on the total number of result elements returned
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# (as a comma separated list) by a lookup against the map.
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# A setting of zero disables the limit. Lookups fail with a
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# temporary error if the limit is exceeded. Setting the
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# limit to 1 ensures that lookups do not return multiple
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# values.
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# .PP
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# Pre-Postfix 2.2 legacy interfaces:
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# .IP "\fBselect_function\fR"
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# This parameter specifies a database function name. Example:
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# .ti +4
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# select_function = my_lookup_user_alias
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#
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# This is equivalent to:
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# .ti +4
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# query = SELECT my_lookup_user_alias('%s')
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#
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# This parameter overrides the legacy table-related fields (described
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# below). With Postfix versions prior to 2.2, it also overrides the
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# \fBquery\fR parameter. Starting with Postfix 2.2, the \fBquery\fR
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# parameter has highest precedence, and this parameter is deprecated.
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# Please migrate to the new \fBquery\fR interface as this interface
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# is slated to be phased out.
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# .PP
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# The following parameters (with lower precedence than the
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# \fBselect_function\fR interface described above) can be used to
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# build the SQL select statement as follows:
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#
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# .ti +4
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# SELECT [\fBselect_field\fR]
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# .ti +4
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# FROM [\fBtable\fR]
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# .ti +4
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# WHERE [\fBwhere_field\fR] = '%s'
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# .ti +10
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# [\fBadditional_conditions\fR]
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#
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# The specifier %s is replaced with each lookup by the lookup key
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# and is escaped so if it contains single quotes or other odd
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# characters, it will not cause a parse error, or worse, a security
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# problem.
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#
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# Starting with Postfix 2.2, this interface is obsoleted by the more
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# general \fBquery\fR interface described above. If higher precedence
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# the \fBquery\fR or \fBselect_function\fR parameters described above
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# are defined, these parameters are ignored. Please migrate to the new
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# \fBquery\fR interface as this interface is slated to be phased out.
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# .IP "\fBselect_field\fR"
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# The SQL "select" parameter. Example:
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# .ti +4
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# \fBselect_field\fR = forw_addr
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# .IP "\fBtable\fR"
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# The SQL "select .. from" table name. Example:
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# .ti +4
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# \fBtable\fR = mxaliases
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# .IP "\fBwhere_field\fR
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# The SQL "select .. where" parameter. Example:
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# .ti +4
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# \fBwhere_field\fR = alias
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# .IP "\fBadditional_conditions\fR
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# Additional conditions to the SQL query. Example:
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# .ti +4
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# \fBadditional_conditions\fR = AND status = 'paid'
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# SEE ALSO
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# postmap(1), Postfix lookup table manager
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# postconf(5), configuration parameters
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# ldap_table(5), LDAP lookup tables
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# mysql_table(5), MySQL lookup tables
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# README FILES
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# .ad
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# .fi
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# Use "\fBpostconf readme_directory\fR" or
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# "\fBpostconf html_directory\fR" to locate this information.
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# .na
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# .nf
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# DATABASE_README, Postfix lookup table overview
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# PGSQL_README, Postfix PostgreSQL client guide
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# LICENSE
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# .ad
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# .fi
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# The Secure Mailer license must be distributed with this software.
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# HISTORY
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# PgSQL support was introduced with Postfix version 2.1.
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# AUTHOR(S)
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# Based on the MySQL client by:
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# Scott Cotton, Joshua Marcus
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# IC Group, Inc.
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#
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# Ported to PostgreSQL by:
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# Aaron Sethman
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#
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# Further enhanced by:
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# Liviu Daia
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# Institute of Mathematics of the Romanian Academy
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# P.O. BOX 1-764
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# RO-014700 Bucharest, ROMANIA
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#--
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