Domain removed, DNS messed up

Question

A former technician removed a domain from our environment. I do not know the details on the process he used. All I know, is that if I do an nslookup on an internal machine I get the following.  The first response comes back correctly and displays servername.currentActiveDomain.org but
the non-authoritative comes back incorrectly.  it displays the name as the servername.current&correctdomain.oldDomainNoLongerHere.org.
I am pretty sure this is causing me some issues on network.  When installing vcenter attempts to autodiscover to authenticate, it gets an error and can't find what It is looking for.  I do an nslookup and get this.  I think this is the
issue.
When I look at my DNS, I see: 
The 3rd ldap and 3rd Kerberos entries are the *network.org domain that was removed months ago.  Can I just delete both of those entries out of dns?  As long as that domain is not used and there are no DC's with that domain name will there be an
issue?  I have also removed any references from Active Direct Sites and cannot find any other reference to this domain in DNS.
thank you in advance
mcp

Answer 1

thank you for your reply.
The first one is just the server name.  Then I did another lookup with the FQDN.  Lastly, did a lookup on the server and saw that other domain that is no longer here, listed again in the non-authoritative answer, however, I never see that domain
listed in the log below.
 set d2
 kwf-vcenter
erver:  kwf-dc1.kwfdn.org
ddress:  10.69.1.245
endRequest(), len 39
   HEADER:
       opcode = QUERY, id = 2, rcode = NOERROR
       header flags:  query, want recursion
       questions = 1,  answers = 0,  authority records = 0,  additional = 0
   QUESTIONS:
kwf-vcenter.kwfdn.org, type = A, class = IN
ot answer (55 bytes):
   HEADER:
       opcode = QUERY, id = 2, rcode = NOERROR
       header flags:  response, auth. answer, want recursion, recursion avail.
       questions = 1,  answers = 1,  authority records = 0,  additional = 0
   QUESTIONS:
kwf-vcenter.kwfdn.org, type = A, class = IN
   ANSWERS:
   -> 
kwf-vcenter.kwfdn.org
       type = A, class = IN, dlen = 4
       internet address = 10.69.1.17
       ttl = 1200 (20 mins)
endRequest(), len 39
   HEADER:
       opcode = QUERY, id = 3, rcode = NOERROR
       header flags:  query, want recursion
       questions = 1,  answers = 0,  authority records = 0,  additional = 0
   QUESTIONS:
kwf-vcenter.kwfdn.org, type = AAAA, class = IN
ot answer (88 bytes):
   HEADER:
       opcode = QUERY, id = 3, rcode = NOERROR
       header flags:  response, auth. answer, want recursion, recursion avail.
       questions = 1,  answers = 0,  authority records = 1,  additional = 0
   QUESTIONS:
kwf-vcenter.kwfdn.org, type = AAAA, class = IN
   AUTHORITY RECORDS:
   ->  kwfdn.org
       type = SOA, class = IN, dlen = 37
       ttl = 3600 (1 hour)
       primary name server =
kwf-dc1.kwfdn.org
       responsible mail addr = admin
       serial  = 238612
       refresh = 900 (15 mins)
       retry   = 600 (10 mins)
       expire  = 86400 (1 day)
       default TTL = 3600 (1 hour)
ame:    kwf-vcenter.kwfdn.org
ddress:  10.69.1.17
 kwf-vcenter.kwfdn.org
erver:  kwf-dc1.kwfdn.org
ddress:  10.69.1.245
endRequest(), len 49
   HEADER:
       opcode = QUERY, id = 4, rcode = NOERROR
       header flags:  query, want recursion
       questions = 1,  answers = 0,  authority records = 0,  additional = 0
   QUESTIONS:
kwf-vcenter.kwfdn.org.kwfdn.org, type = A, class = IN
NS request timed out.
   timeout was 2 seconds.
imeout (2 secs)
endRequest failed
endRequest(), len 49
   HEADER:
       opcode = QUERY, id = 5, rcode = NOERROR
       header flags:  query, want recursion
       questions = 1,  answers = 0,  authority records = 0,  additional = 0
   QUESTIONS:
kwf-vcenter.kwfdn.org.kwfdn.org, type = AAAA, class = IN
ot answer (107 bytes):
   HEADER:
       opcode = QUERY, id = 5, rcode = NXDOMAIN
       header flags:  response, auth. answer, want recursion, recursion avail.
       questions = 1,  answers = 0,  authority records = 1,  additional = 0
   QUESTIONS:
kwf-vcenter.kwfdn.org.kwfdn.org, type = AAAA, class = IN
   AUTHORITY RECORDS:
   ->  kwfdn.org
       type = SOA, class = IN, dlen = 37
       ttl = 3600 (1 hour)
       primary name server =
kwf-dc1.kwfdn.org
       responsible mail addr = admin
       serial  = 238612
       refresh = 900 (15 mins)
       retry   = 600 (10 mins)
       expire  = 86400 (1 day)
       default TTL = 3600 (1 hour)
endRequest(), len 39
   HEADER:
       opcode = QUERY, id = 6, rcode = NOERROR
       header flags:  query, want recursion
       questions = 1,  answers = 0,  authority records = 0,  additional = 0
   QUESTIONS:
kwf-vcenter.kwfdn.org, type = A, class = IN
ot answer (55 bytes):
   HEADER:
       opcode = QUERY, id = 6, rcode = NOERROR
       header flags:  response, auth. answer, want recursion, recursion avail.
       questions = 1,  answers = 1,  authority records = 0,  additional = 0
   QUESTIONS:
kwf-vcenter.kwfdn.org, type = A, class = IN
   ANSWERS:
   -> 
kwf-vcenter.kwfdn.org
       type = A, class = IN, dlen = 4
       internet address = 10.69.1.17
       ttl = 1200 (20 mins)
endRequest(), len 39
   HEADER:
       opcode = QUERY, id = 7, rcode = NOERROR
       header flags:  query, want recursion
       questions = 1,  answers = 0,  authority records = 0,  additional = 0
   QUESTIONS:
kwf-vcenter.kwfdn.org, type = AAAA, class = IN
ot answer (88 bytes):
   HEADER:
       opcode = QUERY, id = 7, rcode = NOERROR
       header flags:  response, auth. answer, want recursion, recursion avail.
       questions = 1,  answers = 0,  authority records = 1,  additional = 0
   QUESTIONS:
kwf-vcenter.kwfdn.org, type = AAAA, class = IN
   AUTHORITY RECORDS:
   ->  kwfdn.org
       type = SOA, class = IN, dlen = 37
       ttl = 3600 (1 hour)
       primary name server =
kwf-dc1.kwfdn.org
       responsible mail addr = admin
       serial  = 238612
       refresh = 900 (15 mins)
       retry   = 600 (10 mins)
       expire  = 86400 (1 day)
       default TTL = 3600 (1 hour)
ame:    kwf-vcenter.kwfdn.org
ddress:  10.69.1.17
:\Users\millerr>nslookup
kwf-vcenter.kwfdn.org
erver:  kwf-dc1.kwfdn.org
ddress:  10.69.1.245
on-authoritative answer:
ame:   
kwf-vcenter.kwfdn.org.newtechnetwork.org
ddress:  162.249.109.162
mcp