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<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html> <head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<title> Postfix manual - sqlite_table(5) </title>
</head> <body> <pre>
SQLITE_TABLE(5) SQLITE_TABLE(5)
<b>NAME</b>
sqlite_table - Postfix SQLite configuration
<b>SYNOPSIS</b>
<b>postmap -q "</b><i>string</i><b>" <a href="sqlite_table.5.html">sqlite</a>:/etc/postfix/</b><i>filename</i>
<b>postmap -q - <a href="sqlite_table.5.html">sqlite</a>:/etc/postfix/</b><i>filename</i> <<i>inputfile</i>
<b>DESCRIPTION</b>
The Postfix mail system uses optional tables for address rewriting or
mail routing. These tables are usually in <b>dbm</b> or <b>db</b> format.
Alternatively, lookup tables can be specified as SQLite databases. In
order to use SQLite lookups, define an SQLite source as a lookup table
in <a href="postconf.5.html">main.cf</a>, for example:
<a href="postconf.5.html#alias_maps">alias_maps</a> = <a href="sqlite_table.5.html">sqlite</a>:/etc/sqlite-aliases.cf
The file /etc/postfix/sqlite-aliases.cf has the same format as the
Postfix <a href="postconf.5.html">main.cf</a> file, and can specify the parameters described below.
<b>BACKWARDS COMPATIBILITY</b>
For compatibility with other Postfix lookup tables, SQLite parameters
can also be defined in <a href="postconf.5.html">main.cf</a>. In order to do that, specify as SQLite
source a name that doesn't begin with a slash or a dot. The SQLite
parameters will then be accessible as the name you've given the source
in its definition, an underscore, and the name of the parameter. For
example, if the map is specified as "<a href="sqlite_table.5.html">sqlite</a>:<i>sqlitename</i>", the parameter
"query" below would be defined in <a href="postconf.5.html">main.cf</a> as "<i>sqlitename</i>_query".
Normally, the SQL query is specified via a single <b>query</b> parameter
(described in more detail below). When this parameter is not specified
in the map definition, Postfix reverts to an older interface, with the
SQL query constructed from the <b>select_field</b>, <b>table</b>, <b>where_field</b> and
<b>additional_conditions</b> parameters. The old interface will be gradually
phased out. To migrate to the new interface set:
<b>query</b> = SELECT [<i>select</i><b>_</b><i>field</i>]
FROM [<i>table</i>]
WHERE [<i>where</i><b>_</b><i>field</i>] = '%s'
[<i>additional</i><b>_</b><i>conditions</i>]
Insert the value, not the name, of each legacy parameter. Note that the
<b>additional_conditions</b> parameter is optional and if not empty, will
always start with <b>AND</b>.
<b>LIST MEMBERSHIP</b>
When using SQL to store lists such as $<a href="postconf.5.html#mynetworks">mynetworks</a>, $<a href="postconf.5.html#mydestination">mydestination</a>,
$<a href="postconf.5.html#relay_domains">relay_domains</a>, $<a href="postconf.5.html#local_recipient_maps">local_recipient_maps</a>, etc., it is important to under-
stand that the table must store each list member as a separate key. The
table lookup verifies the *existence* of the key. See "Postfix lists
versus tables" in the <a href="DATABASE_README.html">DATABASE_README</a> document for a discussion.
Do NOT create tables that return the full list of domains in $<a href="postconf.5.html#mydestination">mydesti</a>-
<a href="postconf.5.html#mydestination">nation</a> or $<a href="postconf.5.html#relay_domains">relay_domains</a> etc., or IP addresses in $<a href="postconf.5.html#mynetworks">mynetworks</a>.
DO create tables with each matching item as a key and with an arbitrary
value. With SQL databases it is not uncommon to return the key itself
or a constant value.
<b>SQLITE PARAMETERS</b>
<b>dbpath</b> The SQLite database file location. Example:
dbpath = customer_database
<b>query</b> The SQL query template used to search the database, where <b>%s</b> is
a substitute for the address Postfix is trying to resolve, e.g.
query = SELECT replacement FROM aliases WHERE mailbox = '%s'
This parameter supports the following '%' expansions:
<b>%%</b> This is replaced by a literal '%' character.
<b>%s</b> This is replaced by the input key. SQL quoting is used
to make sure that the input key does not add unexpected
metacharacters.
<b>%u</b> When the input key is an address of the form user@domain,
<b>%u</b> is replaced by the SQL quoted local part of the
address. Otherwise, <b>%u</b> is replaced by the entire search
string. If the localpart is empty, the query is sup-
pressed and returns no results.
<b>%d</b> When the input key is an address of the form user@domain,
<b>%d</b> is replaced by the SQL quoted domain part of the
address. Otherwise, the query is suppressed and returns
no results.
<b>%[SUD]</b> The upper-case equivalents of the above expansions behave
in the <b>query</b> parameter identically to their lower-case
counter-parts. With the <b>result_format</b> parameter (see
below), they expand the input key rather than the result
value.
<b>%[1-9]</b> The patterns %1, %2, ... %9 are replaced by the corre-
sponding most significant component of the input key's
domain. If the input key is <i>user@mail.example.com</i>, then
%1 is <b>com</b>, %2 is <b>example</b> and %3 is <b>mail</b>. If the input key
is unqualified or does not have enough domain components
to satisfy all the specified patterns, the query is sup-
pressed and returns no results.
The <b>domain</b> parameter described below limits the input keys to
addresses in matching domains. When the <b>domain</b> parameter is non-
empty, SQL queries for unqualified addresses or addresses in
non-matching domains are suppressed and return no results.
This parameter is available with Postfix 2.2. In prior releases
the SQL query was built from the separate parameters:
<b>select_field</b>, <b>table</b>, <b>where_field</b> and <b>additional_conditions</b>. The
mapping from the old parameters to the equivalent query is:
SELECT [<b>select_field</b>]
FROM [<b>table</b>]
WHERE [<b>where_field</b>] = '%s'
[<b>additional_conditions</b>]
The '%s' in the <b>WHERE</b> clause expands to the escaped search
string. With Postfix 2.2 these legacy parameters are used if
the <b>query</b> parameter is not specified.
NOTE: DO NOT put quotes around the query parameter.
<b>result_format (default: %s</b>)
Format template applied to result attributes. Most commonly used
to append (or prepend) text to the result. This parameter sup-
ports the following '%' expansions:
<b>%%</b> This is replaced by a literal '%' character.
<b>%s</b> This is replaced by the value of the result attribute.
When result is empty it is skipped.
<b>%u</b> When the result attribute value is an address of the form
user@domain, <b>%u</b> is replaced by the local part of the
address. When the result has an empty localpart it is
skipped.
<b>%d</b> When a result attribute value is an address of the form
user@domain, <b>%d</b> is replaced by the domain part of the
attribute value. When the result is unqualified it is
skipped.
<b>%[SUD1-9]</b>
The upper-case and decimal digit expansions interpolate
the parts of the input key rather than the result. Their
behavior is identical to that described with <b>query</b>, and
in fact because the input key is known in advance,
queries whose key does not contain all the information
specified in the result template are suppressed and
return no results.
For example, using "result_format = <a href="smtp.8.html">smtp</a>:[%s]" allows one to use
a mailHost attribute as the basis of a <a href="transport.5.html">transport(5)</a> table. After
applying the result format, multiple values are concatenated as
comma separated strings. The expansion_limit and parameter
explained below allows one to restrict the number of values in
the result, which is especially useful for maps that must return
at most one value.
The default value <b>%s</b> specifies that each result value should be
used as is.
This parameter is available with Postfix 2.2 and later.
NOTE: DO NOT put quotes around the result format!
<b>domain (default: no domain list)</b>
This is a list of domain names, paths to files, or dictionaries.
When specified, only fully qualified search keys with a *non-
empty* localpart and a matching domain are eligible for lookup:
'user' lookups, bare domain lookups and "@domain" lookups are
not performed. This can significantly reduce the query load on
the SQLite server.
domain = postfix.org, <a href="DATABASE_README.html#types">hash</a>:/etc/postfix/searchdomains
It is best not to use SQL to store the domains eligible for SQL
lookups.
This parameter is available with Postfix 2.2 and later.
NOTE: DO NOT define this parameter for <a href="local.8.html">local(8)</a> aliases, because
the input keys are always unqualified.
<b>expansion_limit (default: 0)</b>
A limit on the total number of result elements returned (as a
comma separated list) by a lookup against the map. A setting of
zero disables the limit. Lookups fail with a temporary error if
the limit is exceeded. Setting the limit to 1 ensures that
lookups do not return multiple values.
<b>OBSOLETE QUERY INTERFACE</b>
This section describes an interface that is deprecated as of Postfix
2.2. It is replaced by the more general <b>query</b> interface described
above. If the <b>query</b> parameter is defined, the legacy parameters
described here ignored. Please migrate to the new interface as the
legacy interface may be removed in a future release.
The following parameters can be used to fill in a SELECT template
statement of the form:
SELECT [<b>select_field</b>]
FROM [<b>table</b>]
WHERE [<b>where_field</b>] = '%s'
[<b>additional_conditions</b>]
The specifier %s is replaced by the search string, and is escaped so if
it contains single quotes or other odd characters, it will not cause a
parse error, or worse, a security problem.
<b>select_field</b>
The SQL "select" parameter. Example:
<b>select_field</b> = forw_addr
<b>table</b> The SQL "select .. from" table name. Example:
<b>table</b> = mxaliases
<b>where_field</b>
The SQL "select .. where" parameter. Example:
<b>where_field</b> = alias
<b>additional_conditions</b>
Additional conditions to the SQL query. Example:
<b>additional_conditions</b> = AND status = 'paid'
<b>SEE ALSO</b>
<a href="postmap.1.html">postmap(1)</a>, Postfix lookup table maintenance
<a href="postconf.5.html">postconf(5)</a>, configuration parameters
<a href="ldap_table.5.html">ldap_table(5)</a>, LDAP lookup tables
<a href="mysql_table.5.html">mysql_table(5)</a>, MySQL lookup tables
<a href="pgsql_table.5.html">pgsql_table(5)</a>, PostgreSQL lookup tables
<b>README FILES</b>
<a href="DATABASE_README.html">DATABASE_README</a>, Postfix lookup table overview
<a href="SQLITE_README.html">SQLITE_README</a>, Postfix SQLITE howto
<b>LICENSE</b>
The Secure Mailer license must be distributed with this software.
<b>HISTORY</b>
SQLite support was introduced with Postfix version 2.8.
<b>AUTHOR(S)</b>
Original implementation by:
Axel Steiner
SQLITE_TABLE(5)
</pre> </body> </html>
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