finding authoritative nameservers

Ronald F. Guilmette rfg at
Mon May 19 18:46:49 UTC 2008

In message <48316AF6.5030105 at>, 
Danny Mayer <mayer at> wrote:

>Since dig +trace already does this why bother to write your own unless 
>you just want to do it for your own edification?

Forking takes finite non-zero time & cycles.

I am writting an application that may perhaps become part of one or more
high volume MTA installations.

If performance matters, one does not want to be constantly forking dig
and/or parsing its verbose output.  rather, one would prefer to go to
the proverbial horse's mouth, i.e. by programatically calling primitives
directly in order to obtain the desired information, directly.

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