Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am getting inconsistent name resolution locally with DNS

I have 3 2012 Standard servers and some weirdness on 1.

It is a standard install with IIS role added.

TEST01 is a dev server. with a host header of TEST01.

DATA01 runs internal DNS on .240 and all servers and clients point here for DNS. There is a forward in DNS to (router) with ISP external DNS #s mapped.

if I ping TEST01 from a non AD machine, it I get "Could not find Host TEST01"

If I ping TEST01 from a domain machine(another server), it resolves the IP but does not respond.

if I ping TEST01.AD.local, DNS resolves the IP, but times out.

I can access IIS by entering and I can RDP to it, just not ping.

Any idea where I should start?

share|improve this question

You can't ping because Windows firewall is blocking ICMP. Allow ICMP if you'd like it to respond to pings.

Your non-domain joined computer can't reach it by the short name, because your domain-joined machines are automatically appending their suffix to queries. You can manually configure search suffixes in the network adapter's properties if you'd like.

All of this is working as expected.

share|improve this answer
When there's somethin' strange... in the neighborhood... who ya' gonna call... @MDMarra – Ryan Ries Jul 3 '13 at 2:33
Actually the non-joined computer can see and ping the other 2 servers by the short name as well as the IP. – user1431356 Jul 3 '13 at 3:15
Then why did you say "if I ping TEST01 from a non AD machine, it I get "Could not find Host TEST01" ? – Ryan Ries Jul 3 '13 at 3:18
Because I can't, but APP01 and DATA01 work fine. – user1431356 Jul 3 '13 at 5:06
Well, I went back in after taking a break and its all responding normally again except for the sortname I created for TEST01 as "test". now I also have a shortname on DATA01 called "intranet" that works. I am wondering if there is another cache I need to clear other than flushing dns and restarting the DNS service. – user1431356 Jul 3 '13 at 5:54

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.