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diff --git a/html/MYSQL_README.html b/html/MYSQL_README.html new file mode 100644 index 0000000..147802f --- /dev/null +++ b/html/MYSQL_README.html @@ -0,0 +1,186 @@ +<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN" + "http://www.w3.org/TR/html4/loose.dtd"> + +<html> + +<head> + +<title>Postfix MySQL Howto</title> + +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> + +</head> + +<body> + +<h1><img src="postfix-logo.jpg" width="203" height="98" ALT="">Postfix MySQL Howto</h1> + +<hr> + +<h2>Introduction</h2> + +<p> The Postfix mysql map type allows you to hook up Postfix to a +MySQL database. This implementation allows for multiple mysql +databases: you can use one for a <a href="virtual.5.html">virtual(5)</a> table, one for an +<a href="access.5.html">access(5)</a> table, and one for an <a href="aliases.5.html">aliases(5)</a> table if you want. You +can specify multiple servers for the same database, so that Postfix +can switch to a good database server if one goes bad. </p> + +<p> Busy mail servers using mysql maps will generate lots of +concurrent mysql clients, so the mysql server(s) should be run with +this fact in mind. You can reduce the number of concurrent mysql +clients by using the Postfix <a href="proxymap.8.html">proxymap(8)</a> service. </p> + +<h2>Building Postfix with MySQL support</h2> + +<p> These instructions assume that you build Postfix from source +code as described in the <a href="INSTALL.html">INSTALL</a> document. Some modification may +be required if you build Postfix from a vendor-specific source +package. </p> + +<p> Note: to use mysql with Debian GNU/Linux's Postfix, all you +need is to install the postfix-mysql package and you're done. +There is no need to recompile Postfix. </p> + +<p> The Postfix MySQL client utilizes the mysql client library, +which can be obtained from: </p> + +<blockquote> + <p> <a href="http://www.mysql.com/downloads/">http://www.mysql.com/downloads/</a> </p> +</blockquote> + +<p> In order to build Postfix with mysql map support, you will need to add +-DHAS_MYSQL and -I for the directory containing the mysql headers, and +the mysqlclient library (and libm) to <a href="MYSQL_README.html">AUXLIBS_MYSQL</a>, for example: </p> + +<blockquote> +<pre> +make -f Makefile.init makefiles \ + 'CCARGS=-DHAS_MYSQL -I/usr/local/mysql/include' \ + '<a href="MYSQL_README.html">AUXLIBS_MYSQL</a>=-L/usr/local/mysql/lib -lmysqlclient -lz -lm' +</pre> +</blockquote> + +<p> If your MySQL shared library is in a directory that the RUN-TIME +linker does not know about, add a "-Wl,-R,/path/to/directory" option after +"-lmysqlclient". </p> + +<p> Postfix versions before 3.0 use AUXLIBS instead of <a href="MYSQL_README.html">AUXLIBS_MYSQL</a>. +With Postfix 3.0 and later, the old AUXLIBS variable still supports +building a statically-loaded MySQL database client, but only the new +<a href="MYSQL_README.html">AUXLIBS_MYSQL</a> variable supports building a dynamically-loaded or +statically-loaded MySQL database client. </p> + +<blockquote> + +<p> Failure to use the <a href="MYSQL_README.html">AUXLIBS_MYSQL</a> variable will defeat the purpose +of dynamic database client loading. Every Postfix executable file +will have MYSQL database library dependencies. And that was exactly +what dynamic database client loading was meant to avoid. </p> + +</blockquote> + +<p> On Solaris, use this instead: </p> + +<blockquote> +<pre> +make -f Makefile.init makefiles \ + 'CCARGS=-DHAS_MYSQL -I/usr/local/mysql/include' \ + '<a href="MYSQL_README.html">AUXLIBS_MYSQL</a>=-L/usr/local/mysql/lib -R/usr/local/mysql/lib \ + -lmysqlclient -lz -lm' +</pre> +</blockquote> + +<p> Then, just run 'make'. This requires libz, the compression +library. Older mysql implementations build without libz. </p> + +<h2>Using MySQL tables</h2> + +<p> Once Postfix is built with mysql support, you can specify a +map type in <a href="postconf.5.html">main.cf</a> like this: </p> + +<blockquote> +<pre> +<a href="postconf.5.html#alias_maps">alias_maps</a> = <a href="mysql_table.5.html">mysql</a>:/etc/postfix/mysql-aliases.cf +</pre> +</blockquote> + +<p> The file /etc/postfix/mysql-aliases.cf specifies lots of +information telling Postfix how to reference the mysql database. +For a complete description, see the <a href="mysql_table.5.html">mysql_table(5)</a> manual page. </p> + +<h2>Example: local aliases </h2> + +<pre> +# +# mysql config file for <a href="local.8.html">local(8)</a> <a href="aliases.5.html">aliases(5)</a> lookups +# + +# The user name and password to log into the mysql server. +user = someone +password = some_password + +# The database name on the servers. +dbname = customer_database + +# For Postfix 2.2 and later The SQL query template. +# See <a href="mysql_table.5.html">mysql_table(5)</a> for details. +query = SELECT forw_addr FROM mxaliases WHERE alias='%s' AND status='paid' + +# For Postfix releases prior to 2.2. See <a href="mysql_table.5.html">mysql_table(5)</a> for details. +select_field = forw_addr +table = mxaliases +where_field = alias +# Don't forget the leading "AND"! +additional_conditions = AND status = 'paid' + +# This is necessary to make UTF8 queries work for Postfix 2.11 .. 3.1, +# and is the default setting as of Postfix 3.2. +option_group = client +</pre> + +<h2>Additional notes</h2> + +<p> 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). </p> + +<p> Postfix 3.1 and earlier don't read <b>[client]</b> option group +settings 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 = client</b>". </p> + +<p> The MySQL configuration interface setup allows for multiple +mysql databases: you can use one for a virtual table, one for an +access table, and one for an aliases table if you want. </p> + +<p> Since sites that have a need for multiple mail exchangers may +enjoy the convenience of using a networked mailer database, but do +not want to introduce a single point of failure to their system, +we've included the ability to have Postfix reference multiple hosts +for access to a single mysql map. This will work if sites set up +mirrored mysql databases on two or more hosts. Whenever queries +fail with an error at one host, the rest of the hosts will be tried +in random order. If no mysql server hosts are reachable, then mail +will be deferred until at least one of those hosts is reachable. +</p> + +<h2>Credits</h2> + +<ul> + +<li> The initial version was contributed by Scott Cotton and Joshua +Marcus, IC Group, Inc.</li> + +<li> Liviu Daia revised the configuration interface and added the +<a href="postconf.5.html">main.cf</a> configuration feature.</li> + +<li> Liviu Daia with further refinements from Jose Luis Tallon and +Victor Duchovni developed the common query, result_format, domain and +expansion_limit interface for LDAP, MySQL and PostgreSQL.</li> + +</ul> + +</body> + +</html> |