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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:06:34 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:06:34 +0000 |
| commit | 5e61585d76ae77fd5e9e96ebabb57afa4d74880d (patch) | |
| tree | 2b467823aaeebc7ef8bc9e3cabe8074eaef1666d /html/pgsql_table.5.html | |
| parent | Initial commit. (diff) | |
| download | postfix-upstream.tar.xz postfix-upstream.zip | |
Adding upstream version 3.5.24.upstream/3.5.24upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'html/pgsql_table.5.html')
| -rw-r--r-- | html/pgsql_table.5.html | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/html/pgsql_table.5.html b/html/pgsql_table.5.html new file mode 100644 index 0000000..49c4476 --- /dev/null +++ b/html/pgsql_table.5.html @@ -0,0 +1,289 @@ +<!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 - pgsql_table(5) </title> +</head> <body> <pre> +PGSQL_TABLE(5) PGSQL_TABLE(5) + +<b>NAME</b> + pgsql_table - Postfix PostgreSQL client configuration + +<b>SYNOPSIS</b> + <b>postmap -q "</b><i>string</i><b>" <a href="pgsql_table.5.html">pgsql</a>:/etc/postfix/</b><i>filename</i> + + <b>postmap -q - <a href="pgsql_table.5.html">pgsql</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 PostgreSQL databases. + In order to use PostgreSQL lookups, define a PostgreSQL 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="pgsql_table.5.html">pgsql</a>:/etc/pgsql-aliases.cf + + The file /etc/postfix/pgsql-aliases.cf has the same format as the Post- + fix <a href="postconf.5.html">main.cf</a> file, and can specify the parameters described below. + +<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>PGSQL PARAMETERS</b> + <b>hosts</b> The hosts that Postfix will try to connect to and query from. + Besides a <b>postgresql://</b> connection URI, this setting supports + the historical forms <b>unix:/</b><i>pathname</i> for UNIX-domain sockets and + <b>inet:</b><i>host:port</i> for TCP connections, where the <b>unix:</b> and <b>inet:</b> + prefixes are accepted and ignored for backwards compatibility. + Examples: + hosts = postgresql://username@example.com/tablename?sslmode=require + hosts = host1.some.domain host2.some.domain:port + hosts = unix:/file/name + + The hosts are tried in random order. The connections are auto- + matically closed after being idle for about 1 minute, and are + re-opened as necessary. + + <b>user, password</b> + The user name and password to log into the pgsql server. Exam- + ple: + user = someone + password = some_password + + <b>dbname</b> The database name on the servers. Example: + dbname = 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. (Postfix 2.2 + and later) + + <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. + + The above %S, %U and %D expansions are available with + Postfix 2.2 and later + + <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 above %1, ... %9 expansions are available with Post- + fix 2.2 and later + + 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. + + The precedence of this parameter has changed with Postfix 2.2, + in prior releases the precedence was, from highest to lowest, + <b>select_function</b>, <b>query</b>, <b>select_field</b>, ... + + With Postfix 2.2 the <b>query</b> parameter has highest precedence, see + COMPATIBILITY above. + + NOTE: DO NOT put quotes around the <b>query</b> 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 PostgreSQL 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 MAIN.CF PARAMETERS</b> + For compatibility with other Postfix lookup tables, PostgreSQL parame- + ters can also be defined in <a href="postconf.5.html">main.cf</a>. In order to do that, specify as + PostgreSQL source a name that doesn't begin with a slash or a dot. The + PostgreSQL parameters will then be accessible as the name you've given + the source in its definition, an underscore, and the name of the param- + eter. For example, if the map is specified as "<a href="pgsql_table.5.html">pgsql</a>:<i>pgsqlname</i>", the + parameter "hosts" would be defined in <a href="postconf.5.html">main.cf</a> as "<i>pgsqlname</i>_hosts". + + Note: with this form, the passwords for the PostgreSQL sources are + written in <a href="postconf.5.html">main.cf</a>, which is normally world-readable. Support for this + form will be removed in a future Postfix version. + +<b>OBSOLETE QUERY INTERFACES</b> + This section describes query interfaces that are deprecated as of Post- + fix 2.2. Please migrate to the new <b>query</b> interface as the old inter- + faces are slated to be phased out. + + <b>select_function</b> + This parameter specifies a database function name. Example: + select_function = my_lookup_user_alias + + This is equivalent to: + query = SELECT my_lookup_user_alias('%s') + + This parameter overrides the legacy table-related fields + (described below). With Postfix versions prior to 2.2, it also + overrides the <b>query</b> parameter. Starting with Postfix 2.2, the + <b>query</b> parameter has highest precedence, and the <b>select_function</b> + parameter is deprecated. + + The following parameters (with lower precedence than the <b>select_func-</b> + <b>tion</b> interface described above) can be used to build the SQL select + statement as follows: + + SELECT [<b>select_field</b>] + FROM [<b>table</b>] + WHERE [<b>where_field</b>] = '%s' + [<b>additional_conditions</b>] + + The specifier %s is replaced with each lookup by the lookup key 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. + + Starting with Postfix 2.2, this interface is obsoleted by the more gen- + eral <b>query</b> interface described above. If higher precedence the <b>query</b> or + <b>select_function</b> parameters described above are defined, the parameters + described here are ignored. + + <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 manager + <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="sqlite_table.5.html">sqlite_table(5)</a>, SQLite lookup tables + +<b>README FILES</b> + <a href="DATABASE_README.html">DATABASE_README</a>, Postfix lookup table overview + <a href="PGSQL_README.html">PGSQL_README</a>, Postfix PostgreSQL client guide + +<b>LICENSE</b> + The Secure Mailer license must be distributed with this software. + +<b>HISTORY</b> + PgSQL support was introduced with Postfix version 2.1. + +<b>AUTHOR(S)</b> + Based on the MySQL client by: + Scott Cotton, Joshua Marcus + IC Group, Inc. + + Ported to PostgreSQL by: + Aaron Sethman + + Further enhanced by: + Liviu Daia + Institute of Mathematics of the Romanian Academy + P.O. BOX 1-764 + RO-014700 Bucharest, ROMANIA + + PGSQL_TABLE(5) +</pre> </body> </html> |