[dns-operations] DNS deluge for x.p.ctrc.cc

John Kristoff jtk at ultradns.com
Mon Feb 27 17:30:16 UTC 2006

On Sun, Feb 26, 2006 at 09:23:23AM -0800, william(at)elan.net wrote:
> What is a correct way to verify if dns server is recursive from your 
> resolver? Is asking info on your own domain from remote nameserver ok
> for it? What timeout should be used to decide that there was no answer?

It is possible in some configurations, for example with BIND and an
allow recursion ACL, where generally hosts even outside the ACL will
still receive an answer the server is not authoritative for if it is
cached locally.  So one possible way obvious way around this would be
to query for a record with a TTL=0 that the server is not authoritative


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