DNS stands for the Domain Name System, a hierarchical, distributed database where the keys are domain names.

learn more… | top users | synonyms

1
vote
0answers
79 views

My domain controller/active directory server can't establish a connection with the global catalog

I have a Windows Server 2008 R2 running as my domain controller. It is responsible for Active Directory, DNS, and DHCP. It is the only DC in the forest. Active Directory reports errors every hour: ...
2
votes
1answer
59 views

Windows DNS Server Export

Is there a way or a tool that I can get a csv (or even tab delimited) list of all Forward Lookup Zone records and zones in a Windows 2008 R2 DNS Server? The DNS Server is the built-in Windows one, ...
1
vote
1answer
460 views

DNS A records disappear, but PTR records still remain

We've been having issues with DNS records dropping. Usually it is from DHCP reservations, like printers. Yesterday it was two of our main servers, also DHCP-reserved. Right now I'm looking at a ...
-2
votes
2answers
51 views

MX vs SRV records [closed]

At first sight, it seems that MX and SRV records serve the same purpose. They both: Point a client to the name of the host the server is on Support prioritizing/fallback I'm aware that MX ...
-1
votes
0answers
12 views

Cant resolve dns when has same domain of server in browser [duplicate]

i have just setup a DC running 2008 R2 my domain is tingateitsolutions.com.au and have setup my dc using that domain i just setup DNS with a forwarder to my router 192.168.1.1 and also 8.8.8.8 i ...
2
votes
4answers
173 views

Detecting duplicate IP address from improperly cloned virtual machines

One of our production servers was "cloned" to make a secondary test environment. The source server is a virtual machine (VMWare vSphere environment) joined to a domain and with a static IP address. ...
-1
votes
1answer
43 views

How should I configure subdomain MX / DNS entries? [duplicate]

I have domain example.com and its mx properly configured. I have also an A entry intranet.example.com which points to my CMS. What I want is to have emails of the form user@intranet.example.com and I ...
0
votes
0answers
29 views

Local DNS Server [closed]

I am working on a tool that provides 'global virtual host/VPN' configuration for a LAN. Say I have some domain, mylan.example.com, that points to my router at home. I have a number of machines, alpha, ...
0
votes
1answer
39 views

gpupdate fails, access denied - event ID 1055

I became aware of this issue yesterday after pushing out GPO for Software Policy Restrictions. I am unable to push out MSI installations to certain computers. I went to look at the one of the ...
2
votes
1answer
36 views

DNS grey listing and long retry intervals - standard practices?

My company's ISP has implemented what I'll term DNS "grey listing" (or they have a configuration problem) - they are blocking inbound DNS queries between [resolver IP, server IP] pairs that haven't ...
2
votes
2answers
7k views

Squid throws error, The requested URL could not be retrieved

Sometimes I am getting the following error The requested URL could not be retrieved While trying to retrieve the URL: http://groups.google.com/ The following error was encountered: Unable to ...
0
votes
1answer
592 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
42 views

How to limit dynamic DNS updates

First off, I'm sorry if this is vague, but I'm not very familiar with DNS or DNS terminology. What I'm trying to do: I want to limit what hostnames are allowed to dynamically update DNS. I don't ...
2
votes
3answers
82 views

Is the Reverse PTR record fine

I've checked my email headers at http://mxtoolbox.com which says it is ok. But I'm not sure. MY server's FQDN is host.tariffplansindia.com and for my server's IP( 23.239.30.81) the reverse PTR record ...
-3
votes
0answers
10 views

Multiple Emails From Different Server [closed]

I've an issue that I hope anybody here could help me. 1.I have a domain that bought from domain registrar. 2.After that, I purchase a web-hosting with email plan from other provider and have been ...
0
votes
0answers
18 views

Registering domain with NIC handle?

Many moons ago I was a system administrator for a small company. I vaguely remember that when I registered domains, they would be using a "handle" which I think was for me "BP897". My previous ...
0
votes
2answers
1k views

Mutli-DC Environment DNS Error 4015

We recently added a new 2008 R2 DC to an existing 2003 forest with one 2003 DC. We haven't raised any functional levels. The 2003 DC was powered down (it hadn't been demoted yet, but all the FSMOs are ...
0
votes
1answer
35 views

Get a catch-all DNS and set a MX for a special domain

I'm trying to set a catch-all configuration with Bind. I've followed this answer and it works fine : http://serverfault.com/a/397011/179968 Now I'm trying to configure my MX record to configure my ...
0
votes
1answer
932 views

Pageok given by puppet instead of subdomain files hosted on godaddy

I'm managing the e-commerce website for a retail store in Los Angeles, and use a subdomain hosted on GoDaddy as a fileserver to augment our Online Webstore CMS, which won't take large files (and ...
2
votes
1answer
18 views

bind zone file setup for dns round robin

I would like to set up load balancing for my website using DNS round robin. My DNS is managed by my own CentOS 6 server running bind. I added the following into my zone file: @ ...
7
votes
5answers
21k views

Remote Desktop - remote computer that was reached is not the one you specified

We just setup some new Windows 2008 R2 servers and we are unable to Remote Desktop into them from our Windows 7 desktops. Remote desktop connects, but after we provide credentials we get: The ...
0
votes
0answers
4 views

wget is unable to resolve host address 80% of the time [migrated]

I have a wget 'http://xxxx.net/somepage.asp?params@abc' in a bash file. When I run it, four out of five times it says: Resolving xxxx.net (xxxx.net)... failed: No address associated with hostname. ...
8
votes
5answers
7k views

How is it possible that I can do a host lookup but not a curl?

Has anyone ever seen this before? Note that this happens not only with google.com, but with every domain I try. It's a wireless connection (WEP), but I'm not sure how that would be relevant: $ curl ...
3
votes
1answer
1k views

samba_dnsupdate dns_tkey_negotiategss: TKEY is unacceptable

I'm trying to configurate dinamic update to bind I have samba4.0.0rc5 running with bind 9.8 on Ubuntu 12.04. by default the provision command dont create necesary dns.keytab. i've tested with the ...
-1
votes
0answers
16 views

BIND providing recursion when it shouldn't [closed]

I have an installation of bind9 running on Ubuntu 12.04.5 LTS. I use this to run split DNS (pointing my internal server names to local IPs rather than external IPs). When I query an internal FQDN ...
0
votes
1answer
35 views

DNS issue “Nameserver cannot be queried for SOA.” - Eurodns registrar

Recently we purchased a few domains ( on EuroDNS, which we have been using for years), to use as sending domains for emails. Our ESP asked us to point them to their NS. All went smooth for .com and ...
1
vote
2answers
15 views

How can I redirect requests for a site in IIS to a different external server?

I am about to move my website away from IIS to a Linux VPS. Part of this involves updating zone records. There will be some time from when I change my zone records to when they are propagated to ...
-2
votes
0answers
16 views

BIND forwarders working but not root servers

I took a system with an old version of Fedora on it and bare metal loaded Fedora 20. I used the KDE install option and then added Bind via KPACKAGEKIT. After adding a local zone it could resolve my ...
1
vote
1answer
51 views

Can I Deploy a batch file with Group Policy to run as administrator?

I have created a batch fill which will block Facebook by amending the hosts file in this location: C:\windows\system32\drivers\etc\hosts This is the contents of the file: @echo off echo ...
3
votes
1answer
873 views

How should DNS be configured for remote VPN access to a Windows Domain?

Suppose you have a small windows domain configured as follows: domain name is ad.example.com (as per these guidelines) DC1 is at 10.10.10.3 DC2 is at 10.10.10.4 DC1 and DC2 are running the ...
0
votes
3answers
2k views

Running my own Dynamic DNS server

I have a few servers on which I run nameserver trough webmin/bind. Now I have a computer at home that I want to access from anywhere in the world, the only problem is, my IP adress changes often. ...
-2
votes
1answer
30 views

SSL Certificate on CNAME

I have been reviewing the other posts regarding the issue, but having some trouble understanding since I've tried implementing it but still not able to figure it out. I have 2 servers. The main ...
0
votes
1answer
843 views

How to give Domain Name to IPs in an Intranet Network

I Know this is a Common topic here but I'm still confused. I have a Windows Server 2003 DHCP/App Server Machine with DNS configured. The Clients are Lubuntu 12.04 Systems. I want to host my PHP ...
-3
votes
1answer
34 views

DNS configuration for webserver path

What I have is: some vservers and some domains, located at different hosters. A webserver with Port 8081 on one server. I have a path like "123.123.123.123:8081/app/" What I want is: a subdomain ...
5
votes
5answers
3k views

Making iptables easier to maintain

My network is completely locked down except for a few sites which are whitelisted. This is all done through iptables, which looks something like this: # Allow traffic to google.com iptables -A ...
2
votes
1answer
59 views

DNS settings on managed switches in LAN

We have a Windows 2008 server that is connected to a managed switch with about 15 Cat5e connections and three fiber branches that go to different parts of campus. At each of these parts there is ...
-2
votes
1answer
32 views

DNS settings on computers and switches [duplicate]

Noob questions. I have static IPs on many of my Windows computers in our Windows 2008 domain. In the network settings at each, I have an a static IP and subnet. The default Gateway is set to our ...
0
votes
1answer
26 views

Setting DNS TTL for an external address

To start with, I don't know jack about DNS servers. I have been stuck with resolving a problem with a DNS-Server because I discovered a problem with one of our systems and determined that it was ...
0
votes
0answers
43 views

Internet drops out randomly for short periods of time (LAN issue)

I run a network (I'm just a math teacher) at my school. We get random 10 or so minute periods (I'd guess three a day on average) where the Internet is not accessible from within the LAN. If I go to ...
12
votes
2answers
2k views

What are SPF records, and how do I configure them?

This is a canonical question about setting up SPF records. I have an office with many computers that share a single external ip (I'm unsure if the address is static or dynamic). Each computer ...
6
votes
1answer
573 views

Multiple SPF records for multiple domains

We have recently started using Office 365 for our email, which requires us to add a DNS TXT record with the value v=spf1 include:spf.protection.outlook.com -all. We already have an SPF record with the ...
1
vote
2answers
957 views

DNS resolution on Windows Server 2012 running Hyper-V

The problem shows as follows: Ping hostname <-- the host answers, it seems like the resolve is done over netbios nslookup hostname <-- hostname wasn't found by UnKnown: No response from ...
1
vote
1answer
44 views

Robust and flexible hosting of DNS A records

I'm currently working on a web platform that will be used to power lots of small websites. All of the websites will be hosted on this platform, on either a dedicated or VPS set-up. I don't want to ...
0
votes
0answers
14 views

geoipdns data update on the fly not working

I install geoipdns recently. It runs fine but it doesn't take new data updates correctly. Data updates should be made without restarting geoipdns, but it's not. I run the update with these steps: cp ...
1
vote
2answers
137 views

http is automatically redirecting to https for a custom domain on google app engine

I am trying to get a custom domain to work with Google App Engine 1.9.7 without SSL I have done all the prerequisites; Domain is verified with the proper TXT records. Domain is configured in the ...
12
votes
3answers
1k views

How does the HTTP GET method work in relation to DNS protocol?

I am trying to understand application layer protocols in TCP/IP stack. I know that both HTTP and DNS protocol stay at the top layer (Application Layer). So, when a browser wants to access a resource, ...
4
votes
1answer
2k views

using wildcards in host-aliases for Tomcat's virtual hosts

I want to do the following with Tomcat 5.5: *.mydomain.com should go to my webapp, located at the virtual host mydomain.com. So I have a virtual host mydomain.com, and I want all *.mydomain.com also ...
7
votes
3answers
17k views

how do i set the dns server on godaddy with AWS?

I have a domain name on godaddy and i also have a amazon web services account. I have an EC2 instance and i want to change the dns nameserver on the godaddy control panel to aws and i have no idea ...
2
votes
4answers
2k views

Email forwarding from my domain to gmail - FAIL

[There are numerous similar questions on ServerFault but I couldn't find one that was exactly on point] Background: I use Gmail for my email client. My email is example@gmail.com. However the email ...
0
votes
0answers
31 views

How can I redirect a domain name based on the source Region on Amazon EC2?

I have two web applications, one in Amazon's US-West-1 region and one in the US-East-1 region running on EC2. For the most part, they do the same thing, but they service different customers based on ...