DNS is the Domain Name System, a hierarchical, distributed database where the keys are domain names. The primary references are: RFC 1034 - Domain Names - Concepts and Facilities RFC 1035 - Domain Names - Implementation and Specification The most common record types found in the DNS are: "A" ...
1
vote
3answers
55 views
DNS resolves to different machine for the same IP
I am using a Windows server running IIS within a domain network. When accessing the website hosted on the server, i able to open the correct page. Refreshing the page within a few seconds shows a web ...
0
votes
1answer
6 views
Server name resolves to different machines
I am using a Windows server running IIS within a domain network. When accessing the website hosted on the server, i able to open the correct page. Refreshing the page within a few seconds shows a web ...
1
vote
3answers
39 views
CloudFlare offers DNS root CNAMEs. Any resolution gotchas to be aware of?
I'm not that familiar with the inner workings of DNS, preferring to just add my CNAMEs and A records as appropriate, and leave the behind the scenes to other services. I host a few sites on Amazon S3, ...
2
votes
2answers
46 views
Clarify benefits of anycast DNS - shouldn't DNS caching make it irrelevent?
We're trying to make a decision between using our hosting company for DNS or using Amazon's Route 53.
One of the benefits of touted by Amazon about Route 53 is that it uses Anycast which means that ...
0
votes
1answer
27 views
Dynamic DNS for professional servers
This might sound like a unusual subject but recently I had major issues with changing DNS servers for our web apps and certain nameservers not releasing our domain names quick enough.
So I've been ...
5
votes
1answer
55 views
What is a reverse zone and how do I set one up?
Background: I have a domain registered through register.com and they have a form for me to setup a reverse zone. I also have a VPS at an IPv4 address x.x.x.x.
What I know: PTR/reverse zones are just ...
1
vote
1answer
35 views
Can't ping a DNS zone on windows server 2008 R2
I´ve just configured a windows server 2008 r2, but got a lot of problems on DNS role.
Let me talk about the server configuration:
name: fdserver
IP address: 192.168.0.10
I have a DNS zone called ...
0
votes
2answers
39 views
using one of 2 DNSs differentiated by requested domain
I'm using some sort of a dns-proxy service (the details aren't clear but as far as I understand it works by resolving the the domain into a cloud based proxy server and returning it's address whilst ...
1
vote
1answer
33 views
Does Windows Azure present an IPv6 address?
When using http://cloudflare.ipv6-test.com/validate.php to see if my website if IPv6 compliant, I see that it is not because it requires an AAAA DNS record.
My site is hosted on Azure, but I can't ...
1
vote
1answer
32 views
Wildcard dns, non-existent subdomains point to main website
Before I start I'd like to say that I've already read relevant questions here on serverfault but I couldn't find a solution.
Here's my problem. I'm using a third party DNS and I've added a wildcard A ...
0
votes
1answer
51 views
How does BIND work? [closed]
Possible Duplicate:
What is a glue record?
I just can't understand how a server running BIND at the same place(or IP) that my website is running is going to provide the DNS records to ...
1
vote
2answers
65 views
Reverse DNS doesn't work - NXDOMAIN
I'm trying to setup a slave DNS server but the reverse mapping doesn't seem to resolve.
When I try 'nslookup nslookup 94.249.214.137' it returns
Server: 66.96.208.21
Address: ...
0
votes
1answer
21 views
Glue Records, Bind9 and Ubuntu 11.10 - DNS Server not Responding?
I'm attempting to create a DNS server to serve copies of a zone for 'example.com'.
Preamble:
The current setup includes:
Ubuntu 11.10
Bind9
Apache 2
I have created Glue records at the registrar ...
0
votes
1answer
26 views
subdomains don't work after disable recursion
I disabled dns recursion because of security alert of intodns.com by adding options {
allow-recursion { localhost; };
};
now I set name server of my domain (ariafile.ir) on ns1.ariafile.ir and ...
0
votes
1answer
32 views
Easiest way to migrate complete dns
I've been struggling with this problem for awhile now and don't know the best way to proceed safely.
Our team recently acquired a smaller company's site design service and we are in the process of ...
0
votes
1answer
26 views
Isolate test lab from network, but still access internet?
I'm setting up a 2003 Server vm for testing purposes as a AD controller with DHCP. It's connected to a network with a DSL router already serving DHCP addresses to numerous other client machines.
...
2
votes
2answers
74 views
How do you set up dynamic cname records?
The project I'm working on requires that we mask AWS EC2 host names with our own subdomains.
For example:
ec2-176-34-163-40.eu-west-1.compute.amazonaws.com
would map to
gf53ef.domain.com
and
...
-2
votes
0answers
42 views
Open DNS issue with my site [closed]
When I try to open my site (http://www.startonlinegames.com) I get the error "Hmm, www.startonlinegames.com isn't loading right now."
Also the following errors appears.
Nameservers for ...
2
votes
1answer
37 views
Uninstalling DNS Server and having ISP run DNS
When I installed Microsoft Small Business Server 2008, it automatically installed DNS and DHCP.
However we simply do not need a DNS server on our server box (we really only use it for file storage ...
4
votes
0answers
50 views
Google c2dm transient 401 errors on some AWS instances
How can we figure out why we're getting occasional 401 errors from the Google c2dm push service on some AWS instances when asking c2dm to deliver a notification?
This is a transient problem. All AWS ...
0
votes
0answers
11 views
Windows 2008 VPN DNS error
I recently set up a VPN on windows server 2008. I can connect fine, but when connected, none of the clients can access the internet.
Windows tells me it is a DNS error, and after some searching, I ...
0
votes
0answers
7 views
Confusion regarding SEO and a name, c name and 301 redirects [migrated]
I have a VPS with and a domain from different hosters. I would like to know about the best practices for setting up the redirects regarding SEO as I am really confused about the different options.
I ...
1
vote
3answers
59 views
SLAAC and DNS, no really - what's the deal?
So I know that there are extensions to SLAAC in the works to enable DNS discovery via RAs (RFC 6106). But what was the original intent? How did the IPv6 designers envision things working without ...
0
votes
1answer
53 views
DNS and Windows Server for the First Time
I am trying to get my domain to point to my server correctly. In my domain manager I had to register a custom nameserver (instead of just pointing it to the IP for some reason), which I did as ...
2
votes
2answers
41 views
Is there a way to use a specific DNS for a specific domain?
At work we use OpenDNS and it has wrongly blocked irc.freenode.net for malware. How can I make sure that any request for *.freenode.net goes to 8.8.8.8 and 8.8.4.4 (Google's DNS).
I tried doing this ...
-1
votes
0answers
16 views
Name or service not known when sending mail
My server has been sending mails for last 9 months but today suddenly it start to raise error:
Error: gaierror: (-2, 'Name or service not known')
I think it is somehow related with my DNS config or ...
1
vote
2answers
24 views
Local authoritative DNS setup
Love this website and have learned a lot since I started lurking. This problem is confusing the hell out of me. If I want my local DNS server to be the authoritative of example.com how do I setup my ...
0
votes
1answer
58 views
Ubuntu 12.04 Apache Sluggish Performance
I've got two installs of ubuntu 12.04 running on VMware ESX host servers and I'm getting very sluggish performance loading web pages from apache compared to the other servers I have on the same data ...
-1
votes
0answers
21 views
Set up a trial of Server 2008r2 with a separate webserver on local ip address
Ok so the server which is acting as the Router for the internal network (ICS) if you can tell me how to set this up with RRASS successfully because I only have problems when trying to set it up that ...
2
votes
1answer
36 views
enable DNSSEC on workstation
our office servers offer DNSSEC. I've tested this with dig.
how can i use DNSSEC with my RHEL6 workstation? (there is no bind on it...)
is it possible to add trusted keys to the workstation (i.e. in ...
0
votes
1answer
39 views
Emails from Hotmail to our domain always bounce
Now this is a rather odd problem with emails from any hotmail address being bounced by one of our domains.
First off, I can guarantee that this is not a spam filter issue as there is defintitely ...
0
votes
0answers
40 views
Using Google DNS / Open DNS will access blocked websites? [closed]
I read somewhere (on many Google searches also), that if my ISP is blocking certain websites, I can switch to OpenDNS and/or GoogleDNS to circumvent this. But clearly this doesn't work for me.
My ...
1
vote
0answers
22 views
dns configuration ubuntu server
how to make zone files auto updated? I mean It should add clients' computers' names.
but it doesn't happend. even more - client can't ping itself with domain name. and nslookup for either 192.168.1.10 ...
0
votes
1answer
32 views
Periodic DNS Fault
I have a reseller account. but sometimes, somthings goes wrong on my websites. I think server is hacked or DNS server is hacked. I searched similar content on google, then I found same HTML codes on ...
-1
votes
1answer
40 views
Domain name nameserver error
Recently, I've been experiencing some downtime for my website www.nexttwist.com.
The downtime is intermittent and it may be up at one location while it is down in another physical location. For some ...
0
votes
1answer
31 views
2 MX dns round robin for with same domain name for Exchange 2010
I have an Exchange 2010 server that is visible under 2 MX records mx.acme.com and mx1.acme.com with 2 different IP addreses from 2 different network providers. They both report as mx.acme.com when ...
0
votes
1answer
32 views
DNS Querys and proxy (squid + dansguardian) responses - who's reponsible for the query?
I'm having a trouble with squid (and dansguardian) in my network that slows web page browsing.
I'm focused now in the DNS queries - i think the DNS can share part of the blame. I've observing my ...
0
votes
2answers
56 views
SBS2011 Standard DNS suddenly not resolving some domains
Suddenly today I am unable to resolve common domains like serverfault.com, facebook.com; but other domains like google.com, cnn.com work fine.
This is on a client machine (Win7 Pro) connected to an ...
0
votes
0answers
29 views
Resolving Domainnames differently for different services
Some time ago we had an issue with our network infrastructure and php with curl.
Our Network infrastructure is fairly simple.
LoadBalancer/Firewall => 5 servers
The Domainname of our website is set ...
2
votes
1answer
64 views
Could not display DNS Resolver Cache in Windows Server 2008 R2 in Hyper-V environment
Currently I had a Windows Server 2008 R2 running in Hyper-V, previously it still able to access any kind of website with domain name. Recently, it failed to do that any more, and I found out that I ...
0
votes
1answer
43 views
DNS reverse lookup
I'm doing the configuration of a DNS server with Ubuntu 12.04 and Bind9. I have a list of clients like this:
192.168.101.23
192.168.101.24
192.168.101.25
192.168.102.23
192.168.102.24
192.168.102.25
...
0
votes
1answer
52 views
Windows DNS doesn't resolve local records to different subnet without domain suffix
I have a domain with a windows DNS that works great for every computer in that subnet. Today I setup a remote office and joined them to the network through a VPN tunnel and so those computers are on ...
0
votes
0answers
22 views
Free shared host domains/reverse whois tools? [closed]
I was wondering if anyone was aware of some good, free web services for finding the domain names used by one IP address (usually for shared) and for reverse whois lookups?
Examples of finding domain ...
1
vote
1answer
91 views
Difference between static IP and elastic IP address?
With Amazon's EC2, to assign an IP address I create an "Elastic IP", however it seems to just give me a static IP address. What is the difference between a static IP and an elastic IP? Or is it the ...
0
votes
0answers
48 views
e-mail not sending
For some reason I can't send from this sever. It's running DNS only from cpanel
sub = NS2
2012-05-20 20:47:03 1SW9Hb-0002wg-C3 <= root@sub.domain.tld U=root P=local S=711 T="lfd on ...
1
vote
2answers
45 views
configure that /etc/resolv.conf won't be modified after restart
I have Gentoo Linux amd64 installed on one of my computers.
I have a static IP configured at /etc/conf.d/net:
auto_eth0="true"
config_eth0="192.168.1.2/24"
routes_eth0="default via 192.168.1.1"
...
-4
votes
0answers
29 views
DNS server ip anycast on hosting company [closed]
I do like to setup dns server(linux) in 3 - 4 regional location.
I want to setup ip anycast, it is so hard to setup. I have to have my own ip address and equipment. That is too much now. No company is ...
0
votes
1answer
57 views
Create subdomains in windows 2008 R2
How do I create and make subdomains like aaa.domainname.com and bbb.domainname.com?
I want them to redirect to one url. I found similar question Here. Can anyone explain the steps how to achieve ...
6
votes
2answers
89 views
Not receiving mails from some senders due to DNS config
I have noticed a peculiar behavior of my google apps domain. Most of the mails come through as you would expect, but over a period of time I have come to the conclusion that mails from certain senders ...
0
votes
2answers
40 views
Errors from intoDNS, how to solve them?
I've got following errors and I'm really frustrated, it is about two days struggling to solve the problem, am just making things worse I think!
When I check mydomain in intodns I get the following ...
