DNS returns SERVFAIL instead of NXDOMAIN for unknown domains

Question

_{Thursday, February 15, 2018 2:02 PM}

Hi

I have an DNS hosted on Windows 2012 R2 server.

My DNS returns SERVFAIL instead of NXDOMAIN when queried for unknown domains.

How can I configure it to return NXDOMAIN as per standard ?

My applications are misbehaving since they are expecting NXDOMAIN

All replies (3)

_{Friday, February 16, 2018 1:58 AM}

Hi,

SERVFAIL messages show that the fully qualified domain name (FQDN) that has been looked up does exist, that the root name servers have information on the domain but that the authoritative name servers are not answering queries for this domain.

NXDOMAIN can mean that the root name servers are not providing any authoritative name servers for this domain. This can be because the domain does not exist or that the domain has expired and been put on hold.

Did your queries meet the definition?

Best Regards,
Frank

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_{Friday, February 16, 2018 3:27 AM}

My DNS has only 4 domains and no forwarding has been setup.

I am querying for a totally differet, 5th, invalid domain:

nslookup junk.com

and it says SERVFAIL whereas I was expecting NXDOMAIN

I found a similar thread here, with no solution

_{Monday, February 19, 2018 2:34 AM}

Hi,

I didn't found any related information about it in Microsoft official documents. Also, I will continue to research and text in the future.
If we have any updates about this issue, we will keep you posted as soon as possible. Your kind understanding is appreciated.  

Best Regards,

Frank

Please remember to mark the replies as an answers if they help.
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