1<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN" 2 "http://www.w3.org/TR/html4/loose.dtd"> 3<html> <head> 4<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 5<title> Postfix manual - socketmap_table(5) </title> 6</head> <body> <pre> 7SOCKETMAP_TABLE(5) SOCKETMAP_TABLE(5) 8 9<b>NAME</b> 10 socketmap_table - Postfix socketmap table lookup client 11 12<b>SYNOPSIS</b> 13 <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> 14 <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> 15 16 <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> 17 <b>postmap -q - <a href="socketmap_table.html">socketmap</a>:unix:</b><i>pathname</i><b>:</b><i>name</i> <<i>inputfile</i> 18 19<b>DESCRIPTION</b> 20 The Postfix mail system uses optional tables for address rewriting. 21 mail routing or policy lookup. 22 23 The Postfix socketmap client expects TCP endpoint names of the form 24 <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> 25 <i>name</i><b>:</b><i>name</i>. In both cases, <i>name</i> specifies the name field in a socketmap 26 client request (see "REQUEST FORMAT" below). 27 28<b>PROTOCOL</b> 29 Socketmaps use a simple protocol: the client sends one request, and the 30 server sends one reply. Each request and each reply are sent as one 31 netstring object. 32 33<b>REQUEST FORMAT</b> 34 The socketmap protocol supports only the lookup request. The request 35 has the following form: 36 37 <i>name</i> <<b>space</b>> <i>key</i> 38 Search the named socketmap for the specified key. 39 40 Postfix will not generate partial search keys such as domain names 41 without one or more subdomains, network addresses without one or more 42 least-significant octets, or email addresses without the localpart, 43 address extension or domain portion. This behavior is also found with 44 <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. 45 46<b>REPLY FORMAT</b> 47 The Postfix socketmap client requires that replies are not longer than 48 100000 characters (not including the netstring encapsulation). Replies 49 must have the following form: 50 51 <b>OK</b> <<b>space</b>> <i>data</i> 52 The requested data was found. 53 54 <b>NOTFOUND</b> <<b>space</b>> 55 The requested data was not found. 56 57 <b>TEMP</b> <<b>space</b>> <i>reason</i> 58 59 <b>TIMEOUT</b> <<b>space</b>> <i>reason</i> 60 61 <b>PERM</b> <<b>space</b>> <i>reason</i> 62 The request failed. The reason, if non-empty, is descriptive 63 text. 64 65<b>SECURITY</b> 66 This map cannot be used for security-sensitive information, 67 because neither the connection nor the server are authenticated. 68 69<b>SEE ALSO</b> 70 <a href="http://cr.yp.to/proto/netstrings.txt">http://cr.yp.to/proto/netstrings.txt</a>, netstring definition 71 <a href="postconf.1.html">postconf(1)</a>, Postfix supported lookup tables 72 <a href="postmap.1.html">postmap(1)</a>, Postfix lookup table manager 73 <a href="regexp_table.5.html">regexp_table(5)</a>, format of regular expression tables 74 <a href="pcre_table.5.html">pcre_table(5)</a>, format of PCRE tables 75 <a href="cidr_table.5.html">cidr_table(5)</a>, format of CIDR tables 76 77<b>README FILES</b> 78 <a href="DATABASE_README.html">DATABASE_README</a>, Postfix lookup table overview 79 80<b>BUGS</b> 81 The protocol limits are not yet configurable. 82 83<b>LICENSE</b> 84 The Secure Mailer license must be distributed with this software. 85 86<b>HISTORY</b> 87 Socketmap support was introduced with Postfix version 2.10. 88 89<b>AUTHOR(S)</b> 90 Wietse Venema 91 IBM T.J. Watson Research 92 P.O. Box 704 93 Yorktown Heights, NY 10598, USA 94 95 Wietse Venema 96 Google, Inc. 97 111 8th Avenue 98 New York, NY 10011, USA 99 100 SOCKETMAP_TABLE(5) 101</pre> </body> </html> 102