NAME

nisplus_table - Postfix NIS+ client

SYNOPSIS


ppoossttmmaapp --qq ""_s_t_r_i_n_g"" ""nniisspplluuss::[[_n_a_m_e==%%ss]];;_n_a_m_e_._n_a_m_e_.""

ppoossttmmaapp --qq -- ""nniisspplluuss::[[_n_a_m_e==%%ss]];;_n_a_m_e_._n_a_m_e_."" <_i_n_p_u_t_f_i_l_e

DESCRIPTION

The Postfix mail system uses optional lookup tables. These tables are usually in ddbbmm or ddbb format. Alternatively, lookup tables can be specified as NIS+ databases.

To find out what types of lookup tables your Postfix system supports use the "ppoossttccoonnff --mm" command.

To test Postfix NIS+ lookup tables, use the "ppoossttmmaapp --qq" 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:
        

nniisspplluuss::[[_n_a_m_e==%%ss]];;_n_a_m_e_._n_a_m_e_._n_a_m_e..::_c_o_l_u_m_n

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

· With each NIS+ table lookup, "%%ss" is replaced by a
version of the lookup string. There can be only one "%%ss" 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 ":_c_o_l_u_m_n" 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 ":_c_o_l_u_m_n" 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 "ppoossttccoonnff rreeaaddmmee__ddiirreeccttoorryy" or
"ppoossttccoonnff hhttmmll__ddiirreeccttoorryy" 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