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<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
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<title> Postfix manual - nisplus_table(5) </title>
</head> <body> <pre>
NISPLUS_TABLE(5) NISPLUS_TABLE(5)
<b>NAME</b>
nisplus_table - Postfix NIS+ client
<b>SYNOPSIS</b>
<b>postmap -q "</b><i>string</i><b>" "<a href="nisplus_table.5.html">nisplus</a>:[</b><i>name</i><b>=%s];</b><i>name.name.</i><b>"</b>
<b>postmap -q - "<a href="nisplus_table.5.html">nisplus</a>:[</b><i>name</i><b>=%s];</b><i>name.name.</i><b>"</b> <<i>inputfile</i>
<b>DESCRIPTION</b>
The Postfix mail system uses optional lookup tables. These tables are
usually in <b>dbm</b> or <b>db</b> format. Alternatively, lookup tables can be spec-
ified as NIS+ databases.
To find out what types of lookup tables your Postfix system supports
use the "<b>postconf -m</b>" command.
To test Postfix NIS+ lookup tables, use the "<b>postmap -q</b>" command as
described in the SYNOPSIS above.
<b>QUERY SYNTAX</b>
Most of the NIS+ query is specified via the NIS+ map name. The general
format of a Postfix NIS+ map name is as follows:
<b><a href="nisplus_table.5.html">nisplus</a>:[</b><i>name</i><b>=%s];</b><i>name.name.name</i><b>.:</b><i>column</i>
Postfix NIS+ map names differ from what one normally would use with
commands such as <b>niscat</b>:
<b>o</b> With each NIS+ table lookup, "<b>%s</b>" is replaced by a version of
the lookup string. There can be only one "<b>%s</b>" instance in a
Postfix NIS+ map name.
<b>o</b> Postfix NIS+ map names use "<b>;</b>" instead of "<b>,</b>", because the lat-
ter character is special in the Postfix <a href="postconf.5.html">main.cf</a> file. Postfix
replaces "<b>;</b>" characters in the map name by "<b>,</b>" before making
NIS+ queries.
<b>o</b> The ":<i>column</i>" part in the NIS+ map name is not part of the
actual NIS+ query. Instead, it specifies the number of the table
column that provides the lookup result. When no ":<i>column</i>" is
specified the first column (1) is used.
<b>EXAMPLE</b>
A NIS+ aliases map might be queried as follows:
<a href="postconf.5.html#alias_maps">alias_maps</a> = <a href="DATABASE_README.html#types">dbm</a>:/etc/mail/aliases,
<a href="nisplus_table.5.html">nisplus</a>:[alias=%s];mail_aliases.org_dir.$<a href="postconf.5.html#mydomain">mydomain</a>.:1
This queries the local aliases file before the NIS+ file.
<b>SEE ALSO</b>
<a href="postmap.1.html">postmap(1)</a>, Postfix lookup table manager
<b>README FILES</b>
<a href="DATABASE_README.html">DATABASE_README</a>, Postfix lookup table overview
<b>LICENSE</b>
The Secure Mailer license must be distributed with this software.
<b>AUTHOR(S)</b>
Geoff Gibbs
UK-HGMP-RC
Hinxton
Cambridge
CB10 1SB, UK
Adopted and adapted by:
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
NISPLUS_TABLE(5)
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