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0
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4answers
1k views

NSLOOKUP and NBLOOKUP give one IP address; PING finds another

In a Windows Server 2008 domain the on-site domain controller serves as both DNS and WINS server. It is also a DHCP server. One workstation is used as a platform for all admin of the various servers ...
0
votes
1answer
41 views

OpenVPN client nslookup failure after disconnect

Currently I am trying to route my traffic through a gateway running Debian Linux which forwards all incoming traffic thorugh a VPN connection (Client -> Gateway with OpenVPN client -> VPN server -> ...
1
vote
1answer
51 views

PC's cant resolve the servers name

we've recently upgraded our server and we've been having an issue where the computers can't find the server without me mapping it's IP in the hosts file. They can find it when I fully qualify it with ...
-3
votes
2answers
46 views

Reverse IP Lookups

When I resolve google.com I get the following ip addresses Name: google.com Addresses: 2607:f8b0:4006:80b::1006 173.194.123.6 173.194.123.0 173.194.123.8 e.t.c However ...
0
votes
0answers
72 views

nslookup is OK, but curl says Couldn't resolve host

curl -L https://github.com/docker/compose/releases/download/1.3.1/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose % Total % Received % Xferd Average Speed Time Time ...
1
vote
1answer
26 views

nslookup how to get list of domains in a DNS server

I want to list all domains In a DNS Server. More details: spouse that foo.com is a web hosting company and ns1.foo.com is their DNS server. the web sites foo1.com to foo100.com are hosted by this ...
1
vote
1answer
77 views

Force use of IPv6 address over IPv4 address

I'm attempting to serve a website from a machine that only has an IPv6 address. I have purchased a domain name and changed the AAAA record of the DNS resource record to my IPv6 address, and have ...
0
votes
0answers
39 views

Nslookup not showing the updated records. Cached?

In Linux server it does not show the updated entry which should be a public IP. I installed nscd and restarted it to see if it'll flush. Its a squid server, fyi nslookup subdomain.domain.com ...
0
votes
1answer
48 views

Nslookup not using hosts file

So I've set public IP on the hosts file for a certain public IP address, but it picks up private ip from nowhere or from DNS. Content of windows hosts file C:\Windows\System32\drivers\etc\Hosts ...
-2
votes
1answer
76 views

Configuring DNS server on Windows Server 2012 R2

I have successfully setup a DNS server on my local virtual machine and its running and I've mapped 2 public IP's with my domain name (****.com). I also created reverse lookup zones which basically map ...
7
votes
3answers
23k views

How can I find the LDAP server in the DNS on Windows?

For Linux, this command should return the DNS record for the LDAP server host -t srv _ldap._tcp.DOMAINNAME (found at Authenticating from Java (Linux) to Active Directory using LDAP WITHOUT ...
1
vote
1answer
165 views

Why is ping not returning local DNS cache result? (Using DNS caching server on an internal network.)

Yet another post about this nslookup works but ping does not. I’ve read a handful of forum posts but could not find anything relevant to my setup and problem, of resolving external domain names on an ...
0
votes
1answer
184 views

Nslookup not working in Active Directory on Windows Server 2012 R2

A few days ago, a colleague had to hard reset one of our servers runnning Windows Server 2012 R2. This server is in our Active Directory and has two DNS servers configured. After that reset, the ...
-1
votes
3answers
648 views

Simple dig output?

In a script I want to be able to write an IP address to somewhere easily, so I thought using dig (or a similar command) with back-ticks. However the simplest output I've been able to come up to wrt ...
3
votes
1answer
142 views

Trying to understand DNS resolution inconsistency

I'm using a DNS issue I've run into to help me understand DNS resolution better. I can't seem to figure out the inconsistency I'm seeing when resolving www.fandompost.com. At the top of my query list ...
0
votes
0answers
87 views

DNS won't respond to one DC

I have a multi site AD setup and am having issues with trust/netlogon/dns on the DNS DC in site 2. Things were fine until a month or so ago, only discovered issues today by chance reviewing logs. ...
0
votes
1answer
37 views

What should be the reverse DNS for the email server?

When I nslookup x.x.x.x my web server's IP address I get this error: Non-existent domain. Must it return the top domain like mydomain.com or it is okay to return ...
0
votes
1answer
177 views

PowerDNS authoritative name server works but non-authoritative name server servfail

In my current role as Devops I have been assigned a few tasks that are new to me including setting up a PDNS server with MySQL backend. After initial setup of the server I tested responses from the ...
2
votes
1answer
14k views

server can't find XXX.in-addr.arpa: NXDOMAIN

I am facing problem while configuring BIND DNS sowing server can't find XXX.in-addr.arpa: NXDOMAIN while reverse dns check! everything works on forward DNS lookup but reverse DNS lookup fails. Here ...
2
votes
1answer
89 views

Cannot find solution to “One or more of your nameservers did not return any of your NS records.” on intoDNS site

I have set up DNS on my Linux Centos server and when I test on this site I get the following errors: WARNING: One or more of your nameservers did not return any of your NS records. ERROR: ...
0
votes
1answer
2k views

dig succeeds, nslookup fails (with dnsmasq as the server)

I installed dnsmasq on a machine of mine (It's a Kubuntu 12.04 LTS), backed only by /etc/hosts (no connection to the Internet until later). Now, if I dig mymachine, I get 192.168.0.1, but if I try to ...
0
votes
0answers
1k views

Cannot Ping or Resolve DNS Internally; Externally works fine

I have an issue where I cannot seem to access a subdomain from within the same server: I can ping, nslookup, etc subdomian.domain.com externally, but from within the server where subdomain.domain.com ...
-2
votes
1answer
143 views

nslookup does not work on certain IP address [closed]

when I gave nslookup 74.125.236.200 Server: 192.168.5.11 Address: 192.168.5.11#53 Non-authoritative answer: 200.236.125.74.in-addr.arpa name = maa03s17-in-f8.1e100.net. ...
4
votes
2answers
2k views

What are all the possible causes of the “An Active Directory Domain Controller (AD DC) for the domain …” error message?

Earlier I was having issues connecting one of my workstations (client) to my domain, and I thought it was because the domain was not in my possession yet (reference: this question). But, due to the ...
0
votes
0answers
119 views

Oracle GNS (Grid Naming Service) Breaks DNS

Am running a 2-node Oracle 12.1.0.2.0 ASM Flex Cluster using Oracle GNS which I believe uses zeroconf to create it's adhoc network. Before GNS starts, DNS works, i.e. nslookup, dig, ping, ssh all ...
0
votes
1answer
2k views

Can't resolve local IP using remote dns server

I'm trying to do something I thought would be pretty simple. Mapping local.mydomain.com to 192.168.0.1 using my registrar's DNS server.(namecheap.com) I've added an A Record for local with value of ...
2
votes
1answer
145 views

Detecting a network from ansible playbook using nslookup

I am working on a Vagrant + Ansible configuration for my team that sets up a developer VM, some of the artifacts needed are only available from my corporate network either by being physically on it or ...
1
vote
1answer
247 views

Understanding apparent DNS changes between centos 6 and 7

I have a couple of test systems running Centos 6 and I thought I'd try out Centos 7. Apart from all the obvious differences (no iptables, no ifconfig), there is one thing that really had me scratching ...
0
votes
2answers
2k views

How does netstat get a hostname from IP while nslookup & nblookup fail every time?

In Windows Server 2003, when I run netstat with no flags, it takes much longer than netstat -n to return results. I realize this is because it has to perform reverse lookups by IP address to get the ...
0
votes
1answer
84 views

How to change hostname without reboot? [closed]

I follow the instructions in http://askubuntu.com/questions/87665/how-do-i-change-the-hostname-without-a-restart. The host name is changed correctly when I verify using "hostname". However, there is ...
2
votes
1answer
1k views

How to get authoritative answers from nslookup? [closed]

Why is it "Non-authoritative"? Even when I look for yahoo.com ip with ns3.yahoo.com I get Non-authoritative answer. Why does a yahoo server keep stackoverflow's ip? From where do I get ...
6
votes
3answers
20k views

nslookup for SRV records (or any non-A records) in non-interactive mode

Is the anyway to run nslookup (Centos 5 or Windows) such that it will look up record types other than A, without having to go to interactive mode and using set type=? For example, I'd like a command ...
0
votes
1answer
874 views

nslookup cannot resolve hostname for machine on external domain from internal domain

Keep in mind, this issue is exclusively for Windows platforms. For a particular company, they have an internal and external domain. One is behind the firewall, and one is in front. I am sitting on ...
1
vote
2answers
95 views

How to determine which server is the cause?

I have just registered a new domain with Malaysia NIC. The registration system is not fully automatic and I am afraid that someone could have botched something in the setting up. At the same time, ...
0
votes
2answers
14k views

nslookup requests time out regardless of server - ping is fine

I've been having intermittent internet connection issues for a week or so now. I now suspect that these are just DNS issues rather than connection issues. At the moment I can ping google.co.uk no ...
37
votes
2answers
83k views

DNS - NSLOOKUP what is the meaning of the non-authorative answer?

When I do a NS Lookup, for some domains I get the reply saying Non-authorative answer:. I want to know what it means? Got answer: HEADER: opcode = QUERY, id = 3, rcode = NXDOMAIN ...
8
votes
4answers
24k views

List TXT records for a domain with Windows nslookup

I want to inspect TXT records for my domain, such as SPF records. I tried the following command with nslookup but it didn't list the TXT records: nslookup -type=TXT example.com What is the correct ...
8
votes
2answers
9k views

DNS can't resolve hostname; nslookup can

I have a user on Windows 7 that is trying to access a local server with a DNS name of windows.cs. We have two internal DNS servers. The DHCP server assigns users the two internal DNS servers as ...
0
votes
1answer
1k views

Setting up Reverse DNS - SERVFAIL error

I am using Ubuntu Server and installed BIND9 so I could set up a DNS server. I am tying to configure Reverse DNS. Here is my /etc/bind/named.conf.local file: zone "grupolar.com" in{ type master; ...
1
vote
0answers
76 views

Some people can access and nslookup my website but some others cant?

I am having a very weird problem with my server. Most people and myself can access normally without problem but some others report they cant and the only way they can access is through proxies and so. ...
0
votes
0answers
161 views

DNS Server Failure

I think I have an odd DNS situation on my hands. We have two Windows Server 2008R2 DNS servers that all of our campus machines use. We are unable to get to the site cdbaby.com in any web browser. We ...
1
vote
1answer
3k views

Why does nslookup return two or more ip address for yahoo.com or microsoft.com?

I am newbie with dns What is the exact reason that some sites report two or more ip address while others report single ip? 1) Is it feature or error in configuration? 2) Is it something related to ...
4
votes
0answers
6k views

OSX nslookup can resolve a lan hostname, but ping cannot? [closed]

I'm having an issue which recurs every few days, whereby ping cannot resolve a hostname on my LAN (but nslookup is able to). This is on OSX 10.9.2 (latest). The machine in this case is called ...
1
vote
2answers
148 views

Why are additional DNS records only returned when the query isn't cached?

I'm trying to track down an issue we're having sending mail to a particular domain. We noticed that we're not getting consistent results from nslookup/dig when querying their MX records, and I'm not ...
7
votes
2answers
5k views

SOA and Primary NS record (DNS)

The brunt of the question is this -- What is the relationship between the primary nameserver specified in the SOA record and the nameservers specified in the NS records. How are these things linked? ...
-1
votes
2answers
78 views

Cannot get CNAME on DNS to work correctly [closed]

The domain in question is www.photoparata.com. I am hosting it at GoDaddy.com and have it set to be a CNAME to www.miltonstreet.com. When I go to http://centralops.net/co, they have it correct, as ...
0
votes
0answers
74 views

How to diagnose flaky nslookup/bind9?

BACKGROUND I have a long running DNS (bind9) server running on Ubuntu that works most of the time (from Ubuntu, Win8 or OSX): $ nslookup gitserver Server: 127.0.1.1 Address: ...
2
votes
5answers
6k views

Ping hostname works but nslookup to hostname doesn't

I have a Windows 2008 standard server which can ping by hostname and give me the proper IP address back however if I try to do an nslookup on the hostname I receive: server: nmgdc1.nmg.local Address ...
0
votes
1answer
192 views

Why does this name server resolve incorrectly?

Why does this ENom name server resolve incorrectly? Earthlink is related to my ISP. $ nslookup yahoo.com dns1.name-services.com Server: dns1.name-services.com Address: 98.124.192.1 Name: ...
0
votes
0answers
725 views

pinging an unknown hosts from centos resolves

I am seeing very strange behavior with servers running CentOS 6.4 x64. If I run a ping on a host which clearly doesn't exist: ➜ ~ ping sdafsadfdsadfsasdfasdoi.com PING ...