DCDIAG /test:dns result is pested here.
C:\Users\administrator.SUD>dcdiag /test:dns
Directory Server Diagnosis
Performing initial setup:
Trying to find home server...
Home Server = MUM-ADS-01
* Identified AD Forest.
Done gathering initial info.
Doing initial required tests
Testing server: Default-First-Site-Name\MUM-ADS-01
Starting test: Connectivity
......................... MUM-ADS-01 passed test Connectivity
Doing primary tests
Testing server: Default-First-Site-Name\MUM-ADS-01
Starting test: DNS
DNS Tests are running and not hung. Please wait a few minutes...
......................... MUM-ADS-01 passed test DNS
Running partition tests on : ForestDnsZones
Running partition tests on : DomainDnsZones
Running partition tests on : Schema
Running partition tests on : Configuration
Running partition tests on : sud
Running enterprise tests on : sud.in
Starting test: DNS
Test results for domain controllers:
DC: MUM-ADS-01.sud.in
Domain: sud.in
TEST: Basic (Basc)
Warning: The AAAA record for this DC was not found
TEST: Forwarders/Root hints (Forw)
Error: Root hints list has invalid root hint server:
a.root-servers.net. (198.41.0.4)
Error: Root hints list has invalid root hint server:
b.root-servers.net. (128.9.0.107)
Error: Root hints list has invalid root hint server:
c.root-servers.net. (192.33.4.12)
Error: Root hints list has invalid root hint server:
d.root-servers.net. (128.8.10.90)
Error: Root hints list has invalid root hint server:
e.root-servers.net. (192.203.230.10)
Error: Root hints list has invalid root hint server:
f.root-servers.net. (192.5.5.241)
Error: Root hints list has invalid root hint server:
g.root-servers.net. (192.112.36.4)
Error: Root hints list has invalid root hint server:
h.root-servers.net. (128.63.2.53)
Error: Root hints list has invalid root hint server:
i.root-servers.net. (192.36.148.17)
Error: Root hints list has invalid root hint server:
j.root-servers.net. (192.58.128.30)
Error: Root hints list has invalid root hint server:
k.root-servers.net. (193.0.14.129)
Error: Root hints list has invalid root hint server:
l.root-servers.net. (198.32.64.12)
Error: Root hints list has invalid root hint server:
m.root-servers.net. (202.12.27.33)
TEST: Delegations (Del)
Error: DNS server: sud-ad.sud.in. IP:<Unavailable>
[Missing glue A record]
TEST: Records registration (RReg)
Network Adapter
[00000006] Intel(R) PRO/1000 MT Network Connection:
Warning:
Missing AAAA record at DNS server 10.1.6.132:
MUM-ADS-01.sud.in
Warning:
Missing AAAA record at DNS server 10.1.6.132:
gc._msdcs.sud.in
Warning:
Missing AAAA record at DNS server 10.1.6.133:
MUM-ADS-01.sud.in
Warning:
Missing AAAA record at DNS server 10.1.6.133:
gc._msdcs.sud.in
Warning: Record Registrations not found in some network adapters
Summary of test results for DNS servers used by the above domain
controllers:
DNS server: 128.63.2.53 (h.root-servers.net.)
1 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DN
S server 128.63.2.53
DNS server: 128.8.10.90 (d.root-servers.net.)
1 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DN
S server 128.8.10.90
DNS server: 128.9.0.107 (b.root-servers.net.)
1 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DN
S server 128.9.0.107
DNS server: 192.112.36.4 (g.root-servers.net.)
1 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DN
S server 192.112.36.4
DNS server: 192.203.230.10 (e.root-servers.net.)
1 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DN
S server 192.203.230.10
DNS server: 192.33.4.12 (c.root-servers.net.)
1 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DN
S server 192.33.4.12
DNS server: 192.36.148.17 (i.root-servers.net.)
1 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DN
S server 192.36.148.17
DNS server: 192.5.5.241 (f.root-servers.net.)
1 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DN
S server 192.5.5.241
DNS server: 192.58.128.30 (j.root-servers.net.)
1 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DN
S server 192.58.128.30
DNS server: 193.0.14.129 (k.root-servers.net.)
1 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DN
S server 193.0.14.129
DNS server: 198.32.64.12 (l.root-servers.net.)
1 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DN
S server 198.32.64.12
DNS server: 198.41.0.4 (a.root-servers.net.)
1 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DN
S server 198.41.0.4
DNS server: 202.12.27.33 (m.root-servers.net.)
1 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DN
S server 202.12.27.33
Summary of DNS test results:
Auth Basc Forw Del Dyn RReg Ext
_________________________________________________________________
Domain: sud.in
MUM-ADS-01 PASS WARN FAIL FAIL PASS WARN n/a
......................... sud.in failed test DNS