Re: nslookup fails

Spin <Spin@xxxxxxxx> wrote:
> Hi Kevin I am confused at the purpose of putting a trailing dot
> behind a DNS query.

Adding the trailing dot stops nslookup from using the DNS suffix search list
in its queries.

if you use nslookup -d2 it allows you to see the suffixes nslookup appends,
for instance, if you enter www.microsoft.com (without the dot) in nslookup,
it will append the DNS suffix of let's say domain.com so the first query to
DNS will be www.microsoft.com.domain.com. by adding the dot, the first query
is www.microsoft.com.
Let's say domain.com has a wildcard record in it, guess what happens?
www.microsoft.com.domain.com. hits the wildcard and resolves to whatever IP
address the wildcard resolves to.


--?
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps
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Relevant Pages

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