It depends on how the round-robin is setup. In the case of www.yahoo.com, the client gets multiple IPs back and picks one (at random I assume). The DNS server can only respond with one IP and just rotate through the list as the queries come in. I'm pretty sure you can setup BIND to do it either way, don't remember exactly how to offhand though.

Ryan Moore
----------
Perigee.net Corporation
704-849-8355 (sales)
704-849-8017 (tech)
www.perigee.net

Jon Gabrielson wrote:
Nope, it returns them all on my box.
i.e. when i type "nslookup www.yahoo.com" i get about 20 ip addresses.
So presumably, looking up a garbage address should also work
even with round-robin.


Jon.



On Wednesday 17 September 2003 01:18 pm, Daniel Quinlan wrote:


Jon Gabrielson <[EMAIL PROTECTED]> writes:

The correct way to do this is not "nslookup sitefinder.verisign.com",
but rather "nslookup www.safsdafdsfadsfsdafadsfdsaf.com" or some other
garbage address.  If you program spamassassin to do this, you can
easily keep up with any ip changes that might happen.

That only works until Verisign sets up DNS round robin.


Daniel





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