sendmail, 4th Edition

nisplus

Sun’s newer version of NIS V8.7 and later

Sun Microsystems’ NIS+ is a complete redo of its earlier NIS system. The nisplus type allows you to look up information using NIS+. The form of that type declaration looks like this:

Kname nisplus  nismap.domain

Here, the nismap is an NIS+ database-map name, such as mail_aliases.^[349] If the domain or .domain is missing, the nisplus default domain is used. If the entire nismap.domain is missing, the default becomes mail_aliases.org_dir. The domain org_dir contains all the systemwide administration tables.

Any lookup failures that can be retried will automatically be retried up to five times, with a sleep(3) of 2 seconds between each try. If the map.domain doesn’t exist in the local NIS+ system, no error is reported.

Only a modest number of database switches are available for this type. They are listed in Table 23-20.

Table 23-20. The nisplus database-map type K command switches

Switch	§	Description
-a	-a on page 887	Append tag on successful match.
-D	-D on page 887	Don’t use this database map if DeliveryMode=defer.
-f	-f on page 887	Don’t fold keys to lowercase.
-k	-k on page 888	Specify column for key or key name.
-m	-m on page 888	Suppress replacement on match.
-o	-o on page 889	This database map is optional.
-q	-q on page 889	Don’t strip quotes from key.
-S	-S on page 890	Space replacement character.
-T	-T on page 890	Suffix to append on temporary failure.
-t	-t on page 891	Ignore temporary errors.