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Robert Schmitt avatar Server

Active Directory Domain Lookup not working

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Robert Schmitt

I have an active directory domain HEALTHEXAMPLE (no .local).

There are 2 x DCs. DC01.HEALTHEXAMPLE and DC02.HEALTHTEXAMPLE. Both of the DCs is my DNS Servers too.

I discovered (through struggling to apply group policies) that "nslookup healthexample" does not work. I can also not access \healthtech\sysvol (because of this I assume).

C:\Users\Administrator>nslookup healthexample
Server:  DC01.healthexample
Address:  10.10.10.1

*** DC01.healthtech can't find healthexample: Non-existent domain

C:\Users\Administrator>nslookup healthexample dc02.healthtech
Server:  DC02.healthexample
Address:  10.10.10.2

*** DC02.healthtech can't find healthexample: Non-existent domain

However, when I query this from a linux machine using bind-tools' "dig" command, I do get a result:

rtyr@server ~ $ dig @10.10.10.1 healthtexample

; <<>> DiG 9.16.15 <<>> @10.10.10.1 healthtexample
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57706
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4000
;; QUESTION SECTION:
;healthtexample.                    IN      A

;; ANSWER SECTION:
healthtexample.             600     IN      A       10.10.10.2
healthtexample.             600     IN      A       10.10.10.1

;; Query time: 6 msec
;; SERVER: 10.10.10.1#53(10.10.10.1)
;; WHEN: Wed Sep 29 20:07:16 SAST 2021
;; MSG SIZE  rcvd: 71

What could the reason for this be? I checked my DNS servers and healthtexample has 2 x A records pointing to 10.10.10.1 and 10.10.10.2 respectively.

Both machines are running Windows Server 2019 Standard

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joeqwerty avatar
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joeqwerty
https://docs.microsoft.com/en-us/troubleshoot/windows-server/identity/deployment-operation-ad-domains
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