December 2002
Intermediate to advanced
1232 pages
56h 38m
English
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Name
ResolverOptions
Synopsis
The ResolverOptions option allows you to tune the
way DNS lookups are performed. The forms of this option are as
follows:
O ResolverOptions=arg ... ← configuration file (V8.7 and later) -OResolverOptions="arg ..." ← command line (V8.7 and later) define(`confBIND_OPTS',`arg ...') ← mc configuration (V8.7 and later) -oI"arg ..." ← command line (V8.6 and later) OIarg ... ← configuration file (V8.6 and later) OIbool ← configuration file (deprecated) -oIbool← command line (deprecated)
The arg is one or more arguments that
allow you to tune the behavior of the name server. The
arg arguments are identical to the flags
listed in resolver(3), but you omit the
RES_ prefix. For example, RES_DNSRCH is expressed
as DNSRCH. A flag can be preceded by a plus or a minus to enable or
disable the corresponding name server option. If no pluses or minuses
appear, the name server option is enabled just as though a plus was
present. Consider the following:
O ResolverOptions=+AAONLY -DNSRCH
These turn on the AAONLY name server option (Authoritative Answers
Only) and turn off the DNSRCH name server option (search the domain
path). If the ResolverOptions option is omitted
entirely, the default is for the DNSRCH, DEFNAMES, and RECURSE name
server options to be enabled and all others to be disabled. Thus, for
example, DNSRCH is always enabled unless you specifically turn it
off.
Beginning with V8.7 sendmail, the special string
HasWildcardMX can be listed along with the other ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.