diff options
Diffstat (limited to 'html/mysql_table.5.html')
| -rw-r--r-- | html/mysql_table.5.html | 373 |
1 files changed, 373 insertions, 0 deletions
diff --git a/html/mysql_table.5.html b/html/mysql_table.5.html new file mode 100644 index 0000000..6dcb4ed --- /dev/null +++ b/html/mysql_table.5.html @@ -0,0 +1,373 @@ +<!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 - mysql_table(5) </title> +</head> <body> <pre> +MYSQL_TABLE(5) MYSQL_TABLE(5) + +<b>NAME</b> + mysql_table - Postfix MySQL client configuration + +<b>SYNOPSIS</b> + <b>postmap -q "</b><i>string</i><b>" <a href="mysql_table.5.html">mysql</a>:/etc/postfix/</b><i>filename</i> + + <b>postmap -q - <a href="mysql_table.5.html">mysql</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 MySQL databases. In + order to use MySQL lookups, define a MySQL 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="mysql_table.5.html">mysql</a>:/etc/mysql-aliases.cf + + The file /etc/postfix/mysql-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>MYSQL PARAMETERS</b> + <b>hosts</b> The hosts that Postfix will try to connect to and query from. + Specify <i>unix:</i> for UNIX domain sockets, <i>inet:</i> for TCP connections + (default). Example: + hosts = host1.some.domain host2.some.domain:port + hosts = unix:/file/name + + The hosts are tried in random order, with all connections over + UNIX domain sockets being tried before those over TCP. The con- + nections are automatically closed after being idle for about 1 + minute, and are re-opened as necessary. Postfix versions 2.0 and + earlier do not randomize the host order. + + NOTE: if you specify localhost as a hostname (even if you prefix + it with <i>inet:</i>), MySQL will connect to the default UNIX domain + socket. In order to instruct MySQL to connect to localhost over + TCP you have to specify + hosts = 127.0.0.1 + + <b>user, password</b> + The user name and password to log into the mysql 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' + + By default, every query must return a result set (instead of + storing its results in a table); with "<b>require_result_set = no</b>" + (Postfix 3.2 and later), the absence of a result set is treated + as "not found". + + 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 MySQL 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>option_file</b> + Read options from the given file instead of the default my.cnf + location. This reads options from the <b>[client]</b> option group, + optionally followed by options from the group given with + <b>option_group</b>. + + This parameter is available with Postfix 2.11 and later. + + <b>option_group (default: Postfix</b> ><b>=3.2: client,</b> <<b>= 3.1: empty)</b> + Read options from the given group of the mysql options file, + after reading options from the <b>[client]</b> group. + + Postfix 3.2 and later read <b>[client]</b> option group settings by + default. To disable this specify no <b>option_file</b> and specify + "<b>option_group =</b>" (i.e. an empty value). + + Postfix 3.1 and earlier don't read <b>[client]</b> option group set- + tings unless a non-empty <b>option_file</b> or <b>option_group</b> value are + specified. To enable this, specify, for example, "<b>option_group =</b> + <b>client</b>". + + This parameter is available with Postfix 2.11 and later. + + <b>require_result_set (default: yes)</b> + If "<b>yes</b>", require that every query returns a result set. If + "<b>no</b>", treat the absence of a result set as "not found". + + This parameter is available with Postfix 3.2 and later. + + <b>tls_cert_file</b> + File containing client's X509 certificate. + + This parameter is available with Postfix 2.11 and later. + + <b>tls_key_file</b> + File containing the private key corresponding to <b>tls_cert_file</b>. + + This parameter is available with Postfix 2.11 and later. + + <b>tls_CAfile</b> + File containing certificates for all of the X509 Certification + Authorities the client will recognize. Takes precedence over + <b>tls_CApath</b>. + + This parameter is available with Postfix 2.11 and later. + + <b>tls_CApath</b> + Directory containing X509 Certification Authority certificates + in separate individual files. + + This parameter is available with Postfix 2.11 and later. + + <b>tls_verify_cert (default: no)</b> + Verify that the server's name matches the common name in the + certificate. + + This parameter is available with Postfix 2.11 and later. + +<b>USING MYSQL STORED PROCEDURES</b> + Postfix 3.2 and later support calling a stored procedure instead of + using a SELECT statement in the query, e.g. + + <b>query</b> = CALL lookup('%s') + + The previously described '%' expansions can be used in the parameter(s) + to the stored procedure. + + By default, every stored procedure call must return a result set, i.e. + every code path must execute a SELECT statement that returns a result + set (instead of storing its results in a table). With + "<b>require_result_set = no</b>", the absence of a result set is treated as + "not found". + + A stored procedure must not return multiple result sets. That is, + there must be no code path that executes multiple SELECT statements + that return a result (instead of storing their results in a table). + + The following is an example of a stored procedure returning a single + result set: + + CREATE [DEFINER=`user`@`host`] PROCEDURE + `lookup`(IN `param` VARCHAR(255)) + READS SQL DATA + SQL SECURITY INVOKER + BEGIN + select goto from alias where address=param; + END + +<b>OBSOLETE MAIN.CF PARAMETERS</b> + For compatibility with other Postfix lookup tables, MySQL parameters + can also be defined in <a href="postconf.5.html">main.cf</a>. In order to do that, specify as MySQL + source a name that doesn't begin with a slash or a dot. The MySQL + 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="mysql_table.5.html">mysql</a>:<i>mysqlname</i>", the parameter + "hosts" would be defined in <a href="postconf.5.html">main.cf</a> as "<i>mysqlname</i>_hosts". + + Note: with this form, the passwords for the MySQL 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 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="pgsql_table.5.html">pgsql_table(5)</a>, PostgreSQL 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="MYSQL_README.html">MYSQL_README</a>, Postfix MYSQL client guide + +<b>LICENSE</b> + The Secure Mailer license must be distributed with this software. + +<b>HISTORY</b> + MySQL support was introduced with Postfix version 1.0. + +<b>AUTHOR(S)</b> + Original implementation by: + Scott Cotton, Joshua Marcus + IC Group, Inc. + + Further enhancements by: + Liviu Daia + Institute of Mathematics of the Romanian Academy + P.O. BOX 1-764 + RO-014700 Bucharest, ROMANIA + + Stored-procedure support by John Fawcett. + + Wietse Venema + Google, Inc. + 111 8th Avenue + New York, NY 10011, USA + + MYSQL_TABLE(5) +</pre> </body> </html> |