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<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN"
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<title> Postfix manual - socketmap_table(5) </title>
</head> <body> <pre>
SOCKETMAP_TABLE(5) SOCKETMAP_TABLE(5)
<b>NAME</b>
socketmap_table - Postfix socketmap table lookup client
<b>SYNOPSIS</b>
<b>postmap -q "</b><i>string</i><b>" <a href="socketmap_table.html">socketmap</a>:inet:</b><i>host</i><b>:</b><i>port</i><b>:</b><i>name</i>
<b>postmap -q "</b><i>string</i><b>" <a href="socketmap_table.html">socketmap</a>:unix:</b><i>pathname</i><b>:</b><i>name</i>
<b>postmap -q - <a href="socketmap_table.html">socketmap</a>:inet:</b><i>host</i><b>:</b><i>port</i><b>:</b><i>name</i> <<i>inputfile</i>
<b>postmap -q - <a href="socketmap_table.html">socketmap</a>:unix:</b><i>pathname</i><b>:</b><i>name</i> <<i>inputfile</i>
<b>DESCRIPTION</b>
The Postfix mail system uses optional tables for address rewriting.
mail routing or policy lookup.
The Postfix socketmap client expects TCP endpoint names of the form
<b>inet:</b><i>host</i><b>:</b><i>port</i><b>:</b><i>name</i>, or UNIX-domain endpoints of the form <b>unix:</b><i>path-</i>
<i>name</i><b>:</b><i>name</i>. In both cases, <i>name</i> specifies the name field in a socketmap
client request (see "REQUEST FORMAT" below).
<b>PROTOCOL</b>
Socketmaps use a simple protocol: the client sends one request, and the
server sends one reply. Each request and each reply are sent as one
netstring object.
<b>REQUEST FORMAT</b>
The socketmap protocol supports only the lookup request. The request
has the following form:
<i>name</i> <<b>space</b>> <i>key</i>
Search the named socketmap for the specified key.
Postfix will not generate partial search keys such as domain names
without one or more subdomains, network addresses without one or more
least-significant octets, or email addresses without the localpart,
address extension or domain portion. This behavior is also found with
<a href="cidr_table.5.html">cidr</a>:, <a href="pcre_table.5.html">pcre</a>:, and <a href="regexp_table.5.html">regexp</a>: tables.
<b>REPLY FORMAT</b>
The Postfix socketmap client requires that replies are not longer than
100000 characters (not including the netstring encapsulation). Replies
must have the following form:
<b>OK</b> <<b>space</b>> <i>data</i>
The requested data was found.
<b>NOTFOUND</b> <<b>space</b>>
The requested data was not found.
<b>TEMP</b> <<b>space</b>> <i>reason</i>
<b>TIMEOUT</b> <<b>space</b>> <i>reason</i>
<b>PERM</b> <<b>space</b>> <i>reason</i>
The request failed. The reason, if non-empty, is descriptive
text.
<b>SECURITY</b>
This map cannot be used for security-sensitive information,
because neither the connection nor the server are authenticated.
<b>SEE ALSO</b>
<a href="http://cr.yp.to/proto/netstrings.txt">http://cr.yp.to/proto/netstrings.txt</a>, netstring definition
<a href="postconf.1.html">postconf(1)</a>, Postfix supported lookup tables
<a href="postmap.1.html">postmap(1)</a>, Postfix lookup table manager
<a href="regexp_table.5.html">regexp_table(5)</a>, format of regular expression tables
<a href="pcre_table.5.html">pcre_table(5)</a>, format of PCRE tables
<a href="cidr_table.5.html">cidr_table(5)</a>, format of CIDR tables
<b>README FILES</b>
<a href="DATABASE_README.html">DATABASE_README</a>, Postfix lookup table overview
<b>BUGS</b>
The protocol limits are not yet configurable.
<b>LICENSE</b>
The Secure Mailer license must be distributed with this software.
<b>HISTORY</b>
Socketmap support was introduced with Postfix version 2.10.
<b>AUTHOR(S)</b>
Wietse Venema
IBM T.J. Watson Research
P.O. Box 704
Yorktown Heights, NY 10598, USA
Wietse Venema
Google, Inc.
111 8th Avenue
New York, NY 10011, USA
SOCKETMAP_TABLE(5)
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