Windows Server 2012 DNS resolution timeouts

I have a IIS server running on Windows Server 2012 Standard (Not R2 and Not SP1).  When performing a NSLOOKUP from the command line I will be able to resolve a host with no errors maybe 15% of the time.  Below is a sampling of some of the errors I am receiving:

For reference - <serverNAME> is the name of the server I'm trying to resolve, <DNS_serverNAME> is the short name of my DNS server, <domain> is my domain name, <DNS_serverIP> is the IP address of my DNS server, and <serverIP> is the resolved IP address for the server.

C:\Windows\System32>nslookup <serverNAME>
Server:  <DNS_serverNAME>.<domain>.com
Address:  <DNS_serverIP>

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to <DNS_serverNAME>.<domain>.com timed-out



C:\Windows\System32>nslookup <serverNAME>
DNS request timed out.
    timeout was 2 seconds.
Server:  UnKnown
Address:  <DNS_serverIP>

DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out



C:\Windows\System32>nslookup <serverNAME>.<domain>.com
Server:  <DNS_serverNAME>.<domain>.com
Address:  <DNS_serverIP>

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to <DNS_serverNAME>.<domain>.com timed-out



C:\Windows\System32>nslookup <serverNAME>.<domain>.com
Server:  <DNS_serverNAME>.<domain>.com
Address:  <DNS_serverIP>

DNS request timed out.
    timeout was 2 seconds.
Name:    <serverNAME>.<domain>.com
Address:  <serverIP>


I do have BOTH IPv4 & IPv6 enabled, but IPv4 is listed above IPv6 under the bindings for both File and Printer Sharing for Microsoft Networks and Client for Microsoft Networks.  I have one (1) other Windows 2012 IIS server with the same configuration that is resolving names fine.  IP addresses are statically assigned and the DNS servers are Domain Controllers on the local subnet.  Host & PTR records exist for the server and the DNS servers.  The only difference between this server and the working IIS server is this server has Backup Exec 2010 Remote Agent Utility running.

I have rebooted the machine numerous times, disabled IPv6, and checked the switch port for errors (there were none).  I am pulling my hair out here and would love some help.

Thank you in advance!!
teleformixAsked:
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Cliff GaliherCommented:
That really sounds like a bad NIC (or NIC driver) or a saturated network.  NetMon can help determine if the network is being saturated by a broadcast storm or denial-of-service (or just way too much web traffic hitting IIS), while determining a bad NIC or driver usually requires other hardware to test. The occasional success tells me that this isn't a configuration issue, binding, IPv6, or any of the other avenues you seem to be chasing.
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teleformixAuthor Commented:
TL;DR - Hardware issue.

Long version - I recently just took over management of these IIS servers.  Apparently there are 4 NICs on this machine that are setup in a network team to appear as 1 IP address, but you should still see the 4 MAC addresses.  I was able to find the MAC addresses of 3 out of the 4 interfaces.  Once I disabled the interface in Windows belonging to the MAC address I couldn't find, all network related errors stopped.  Yes, I know, poor troubleshooting on my part, but sometimes you need a second set of eyes.  Thank you to Cliff Galiher for pointing me towards hardware!
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Windows Server 2012

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