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Rogue Hostname value

Posted on 2007-04-06
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Last Modified: 2010-04-18
I have a PDC that shows pdc.foobar.com as being its hostname (I guess that would be FQDN) whether I look at the properties or if I use netdom, nslookup, dns settings or active directory.  However, one of my staff performed a "SuperScan" from a Linux box and got mail.whizbang.com while scanning the subnet.  I cannot even find whizbang when I look through these...or even when I perform a registry scan.

Where might this value still be hiding?

One final piece of information. We are on a managed network...though the PDC is ours...we have the 10.9.53.x subnet.  Could the value be in the network router that partitions us?
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Question by:OthenTec
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LauraEHunterMVP earned 500 total points
ID: 18864567
I'm unfamiliar with the specifics of a Linux "SuperScan", but I imagine that it is performing a ping-sweep of your subnet and then querying DNS to obtain the registered hostname for hosts within that subnet.   If pdc.foobar.com is registered in DNS as mail.whizbang.com, you can determine this by using the nslookup utility.  Type nslookup at the command prompt and then enter the two FQDNs you reference: if they resolve to the same IP, you need to remove the extraneous DNS record from your DNS server, or contact the manager of your network to do so for you.

Hope this helps.

Laura E. Hunter - Microsoft MVP: Windows Server - Networking
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by:OthenTec
ID: 18865032
I typed that into both my PDC and my local PC.  On both I got the same info (that is...resalehost.networksolutions.com).

When my tcp settings were pointing to the PDC (which is set up as the DNS server as well) I got the above.  I changed to the hosted network's DNS server I got the erroneous info.
It appears that it is their firewall/DNS settings are incorrect.   I will contact them to change.

Thanks for your help.
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