NISPLUS_TABLE(5) | File Formats Manual | NISPLUS_TABLE(5)

# NAME

nisplus_table - Postfix NIS+ client

# SYNOPSIS

    postmap -q "string" "nisplus:[name=%s];name.name."
    postmap -q - "nisplus:[name=%s];name.name." <inputfile

# DESCRIPTION

The Postfix mail system uses optional lookup tables. rewriting or mail routing. These tables are usually in lmdb:, cdb:, hash:, or dbm: format.

Alternatively, lookup tables can be specified as NIS+ databases. To find out what types of lookup tables your Postfix system supports use the "postconf -m" command.

To test Postfix NIS+ lookup tables, use the "postmap -q" command as described in the SYNOPSIS above.

# QUERY SYNTAX

Most of the NIS+ query is specified via the NIS+ map name. The general format of a Postfix NIS+ map name is as follows:

nisplus:[name=%s];name.name.name.:column

Postfix NIS+ map names differ from what one normally would use with commands such as niscat:

- With each NIS+ table lookup, "%s" is replaced by a version of the lookup string. There can be only one "%s" instance in a Postfix NIS+ map name.
- Postfix NIS+ map names use ";" instead of ",", because the latter character is special in the Postfix main.cf file. Postfix replaces ";" characters in the map name by "," before making NIS+ queries.
- The ":column" 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 ":column" is specified the first column (1) is used.

# EXAMPLE

A NIS+ aliases map might be queried as follows:

        alias_maps = dbm:/etc/mail/aliases,

            nisplus:[alias=%s];mail_aliases.org_dir.$mydomain.:1

This queries the local aliases file before the NIS+ file.

# SEE ALSO

    postmap(1), Postfix lookup table manager

# README FILES

Use "postconf readme_directory" or "postconf html_directory" to locate this information.

    DATABASE_README, Postfix lookup table overview

# LICENSE

The Secure Mailer license must be distributed with this software.

# AUTHOR(S)

    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