troubleshooting Question

DNS Forwarding - Only uses first in list

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Rowdyone52 asked on
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We have a local DNS Server that uses our ISP's DNS servers addresses as forwarders.  We have 4 servers in the list.  Lately the ISP has had some DNS issues, that will cause a dns lookup to timeout.  for instance if you type "nslookup" it will fail the first 3 times you try, but then it will eventually work.

The problem I have is this:  If we have four servers in the list, and the problem is with the 1st one, why doesnt it try the second, third, and fourth if the 1st times out?
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