asked on

Unable to resolve correct external IP address

I have a server that is unable to resolve the correct IP address for a specific host. Instead it is returning an erroneous internal IP that isn't correct. I cannot find any entries in DNS referring to the host, nor are there any hosts defined in the host record in system32\drivers\etc...

I've flushed DNS cache multiple times...

Ultimately the site is unable to send any emails to this specific domain because of this.

I don't know where else to look.

Any assistance would be appreciated.

Suliman Abu Kharroub

A quick solution is to create a new record with the correct ip on hosts file until you resolve the problem.

try nslookup server_name 8.8.8.8 to get the correct ip.

8.8.8.8 is a global DNS server for google.

D H

ASKER

I know what the correct IP should be, but doing the nslookup you just recommended still returns the same incorrect IP.

Suliman Abu Kharroub

Then the FQDN is registered on the internet with invalid ip address.

you should change the FQDN from the domain hosting control panel. if they dont have control panel then email/call them.

SOLUTION

Viral Rathod

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

D H

ASKER

That's not the case. I can look up the same server from my personal network and get the correct IP. You do a lookup for outlook.wrcbermuda.com and you'll get a 199.172.x.x address, which is what is correct. I think it's something within my local network, if not the server, then something else throwing back the incorrect address.From my server on the site, I'm getting a 10.10.x.x no matter what.

D H

ASKER

@viralrathod

I stated in my original question that I:

1. Checked DNS for entries (NOT THERE)
2. Checked Host records (NOTHING THERE)
3. Flushed DNS cach (NO DIFFERENCE)

I just added google's 8.8.8.8 to forwarders & restarted DNS services. (NO DIFFERENCE)

My server's DNS entry in the NIC is itself.

Suliman Abu Kharroub

does your internal DNS server host wrcbermuda.com dns zone ? if so check your records.

to get more details about name how name was resolved, use:

nslokup
set d=1
outlook.wrcbermuda.com

D H

ASKER

@sulimanw
Here's the response I received. No my local DNS server does not host that domain...

------------
Got answer:
HEADER:
opcode = QUERY, id = 2, rcode = NXDOMAIN
header flags: response, auth. answer, want recursion, recursion avail.
questions = 1, answers = 0, authority records = 1, additional = 0

QUESTIONS:
outlook.wrcbermuda.com.partners.local, type = A, class = IN
AUTHORITY RECORDS:
-> partners.local
ttl = 3600 (1 hour)
primary name server = srvsbs03.partners.local
responsible mail addr = hostmaster
serial = 3466
refresh = 900 (15 mins)
retry = 600 (10 mins)
expire = 86400 (1 day)
default TTL = 3600 (1 hour)

------------
------------
Got answer:
HEADER:
opcode = QUERY, id = 3, rcode = NOERROR
header flags: response, want recursion, recursion avail.
questions = 1, answers = 1, authority records = 0, additional = 0

QUESTIONS:
outlook.wrcbermuda.com, type = A, class = IN
ANSWERS:
-> outlook.wrcbermuda.com
internet address = 10.10.12.250
ttl = 0 (0 secs)

------------
Non-authoritative answer:
Name: outlook.wrcbermuda.com
Address: 10.10.12.250

ASKER CERTIFIED SOLUTION

D H

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

D H

ASKER

Turned out to be issue with firewall for client network inside same building.