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7
votes
3answers
20k 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
61 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
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
111 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
555 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
100 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
63 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
33 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
105 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
12k 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
60 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
1k 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
65 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
93 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
104 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
210 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
76 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
802 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
16k 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
821 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
87 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
10k 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 ...
32
votes
2answers
73k 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
20k 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
7k 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
940 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
66 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
117 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 ...
3
votes
0answers
5k 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
137 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 ...
6
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
71 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
70 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
5k 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
156 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
695 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 ...
0
votes
1answer
186 views

Getting a reverse lookup answer from nslookup but not from dig

So if I use dig to do a reverse lookup I get: $ dig 71.74.56.122 ; <<>> DiG 9.6.0-APPLE-P2 <<>> 71.74.56.122 ;; global options: +cmd ;; Got answer: ;; ...
4
votes
3answers
19k views

What does “Default Server: Unknown” mean for Windows nslookup

I'd like to solve a question with your kind help, about nslookup on Windows. Please see my CMD commands below(run on WinXP SP2). C:\>ipconfig /all Windows IP Configuration Host Name . . ...
15
votes
5answers
41k views

How to find all hostnames in DNS attached to one IP?

If I have multiple hosts configured on one machine (a la apache's VirtualHosts), how can I do a lookup on the IP and find all domains configured to reach it? For example, I have several web and email ...
2
votes
3answers
154 views

How to get pairs of name server - ip for some domain? [closed]

I want to get pairs of name server - ip for some domain. For example, there is serverfault.com domain. I want to get: NS1.SERVERFAULT.COM - 198.252.206.80 NS2.SERVERFAULT.COM - 198.252.206.81 Is it ...
-2
votes
1answer
61 views

How to get ns records that are registered to ip adress

I have ip ranges. I would like to find ns addresses that are pointing to corresponding ip adress I'm looking for a command to do over nslookup or dig Expected result ...
0
votes
1answer
202 views

Subdomains on Windows Server - nslookup works, ping only with FQDN

I have a Windows Server machine with DNS set up in the following way: Zone: home.local Domain: apache A (same as parent) 192.168.2.4 A xml 192.168.2.4 I want to be able ...
3
votes
1answer
2k views

DNS lookups with/without recursion in NSLOOKUP

I am playing around with NSLOOKUP trying to learn about recursive DNS lookups. I am looking up a bogus host name and I seem to be getting the same results whether I enable or disable recursion. With ...
0
votes
1answer
46 views

Trouble with DNS configuration

I'm having trouble with DNS configuration for a domain and do not know how to trace it properly. From trying to troubleshoot with nslookup, it seems as though the authoritative NS are never being ...
0
votes
1answer
92 views

Rotary.org DNS Resolution - Server Failure

A user reported to me that they are unable to access rotary.org. This is a fairly major international site, so it seemed a bit strange. I replicated the issue on my machine in different browsers. ...