Linked Questions

1 vote
1 answer
1k views

How many DNS Servers must I have? [duplicate]

I am trying to build my own DNS. I have one server which I would like to use as DNS server. Why, according to RFC2182 section 5 (https://www.rfc-editor.org/rfc/rfc2182#section-5) I must have TWO ...
ITChristian's user avatar
1 vote
2 answers
178 views

DNS hosting design - should secondary server not be spread over countries, networks etc? [duplicate]

My DNS registrar and DNS provider recently had a long outage, rendering all my domains unusable (email, own+client websites etc). They have 3 DNS server, who are all in the same co-hosting facility! ...
Kjensen's user avatar
  • 1,069
0 votes
1 answer
32 views

Whether all attempts to determine the ip address successfully if Master DNS shutdown and secondary DNS work [duplicate]

Domain exemple-domain.com has two DNS server: dns1.exemple.com (master) and dns2.exemple.com (slave). questions: If dns1.exemple.com temporarily disabled and dns2.exemple.com works, is it possible ...
snex's user avatar
  • 191
0 votes
0 answers
21 views

Host name "DNS" at registrar versus AWS Route 53 [duplicate]

I'm moving a bunch of sites to a new hosting service. They are explaining to me that I need to run my own DNS, which they are advising that I simply set a host name pointer at my registrar for dns1....
C C's user avatar
  • 475
100 votes
21 answers
54k views

Should we host our own nameservers?

This is a Canonical Question about whether to outsource DNS resolution for ones own domains I currently have my ISP providing DNS for my domain, but they impose limitations on adding records. ...
Saif Khan's user avatar
  • 1,965
30 votes
8 answers
74k views

Why should one have a secondary DNS server?

I'm very confused. I basically understand how DNS works. Here's an example that helps illustrate what I'm having trouble understanding. Right now, I run a small web-server. I use my provider's DNS ...
Sam Levin's user avatar
  • 510
44 votes
2 answers
3k views

Which RFCs should be cited as internet standards?

It's extremely common for RFCs to be cited in support of opinions (including Serverfault Q&A's), but the average IT employee has a very poor understanding in regards to which RFCs define standards ...
Andrew B's user avatar
  • 33.1k
25 votes
2 answers
11k views

Some DNS servers in the world giving wrong IP address for our domain?

Our domain, grahamhancock.com is being wrongly resolved by a few people around the world, but it resolves correctly for most people. When I run through a list of free open DNS providers, about 90% ...
Duncan Marshall's user avatar
-5 votes
3 answers
10k views

How many is too many name servers (ns)?

Ever since GoDaddy's DNS outage I definitely don't trust name servers. I just created a domain name and next step is setting up name servers. I'm thinking of using Route 53, CloudFlare DNS, and ...
iDev247's user avatar
  • 751
11 votes
2 answers
3k views

Can you have NS records pointing to different providers?

Let’s say you register with a provider and you are given the following NS records: Name Server: NS18.EXAMPLE.COM Name Server: NS8.EXAMPLE.COM Could you add these to increase resilience without ...
Ulukai's user avatar
  • 919
9 votes
4 answers
3k views

How long a DNS timeout is cached for?

If none of the servers for the whole zone can be contacted, how long will such fact be cached for?
cnst's user avatar
  • 14.3k
2 votes
3 answers
8k views

MX Dns Record Not Detected

It's been 24 hours since I added an MX record The name was @, type was MX and value was mail.heeldiaries.com There's also an A record with mail.heeldiaries.com pointing to the IP of the server. When I ...
Shiv's user avatar
  • 199
1 vote
3 answers
5k views

Host subdomains with BIND9 and Apache in Ubuntu

I have a domain betasquirrel.com purchased from GoDaddy and a VPS with Ubuntu 16.04. And I hosted the domain successfully using BIND9 as below: Created virtual-host for betasquirrel.com in Apache and ...
Anshad Vattapoyil's user avatar
2 votes
1 answer
4k views

What happens when DNS fails for mail server?

What happens to mail if a sender is unable to get DNS resolution for the mail server? For example suppose mail is being sent and the MX record is found to be mx.example.com. But the attempt to ...
mbrampton's user avatar
  • 361
-3 votes
1 answer
2k views

DNS lookup takes 10 plus seconds [closed]

DNS lookup of www.duckdns.org takes 10 plus seconds. Is this my internet provider's DNS issue? Here is the output of host command using my provider DNS and Google DNS: $ time host www.duckdns.org ...
mehturt's user avatar
  • 91
1 vote
1 answer
2k views

Failed to resolve host: Temporary failure in name resolution [closed]

I have set up a DNS server using BIND on CentOS 7. By checking the DNS server in BuddyNS and using dig amraei.com it seems good and working. Then I have also setup Apache and a virtual host for ...
Omid Amraei's user avatar
1 vote
1 answer
2k views

Resolver Timeouts in Bind 10

Is there any detail on how bind 10 handles resolver timeouts? The latest info I could find was on Bind 8.2.1+ http://fengnet.com/book/DNS.and.BIND.5th.Edition/dns5-CHP-6-SECT-2.html The resolver ...
GeorgeU's user avatar
  • 506
1 vote
3 answers
376 views

Can I Run My Web Service and DNS Service on the Same Server?

I am quite new about Linux. I wonder if I could run DNS and Web Server on the same server? The reason is I have a server which they want me to set it up as a DNS & RevDNS server with the ...
Lunatic Fnatic's user avatar
0 votes
2 answers
299 views

DNS Verification using TXT not working

I have followed the instructions for setting the TXT record for chemicalkinetics.info (registered through siteground). After waiting several days, I still cannot get verification. My only guess has ...
Edward Blurock's user avatar
1 vote
1 answer
625 views

Run a dns cache or local server to reduce unknown host errors?

Our company runs lots of applications which rely on the network for several operations (email sending, file downloading, etc). We ofter get errors like UnknownHostException, which break some business ...
watery's user avatar
  • 163
-1 votes
1 answer
388 views

how to point my domain name to VPS server

I have domain name registered with crazydomains.com and linux vps server with godaddy. I want to point my domain name to VPS server Ip address. so question is Do i need to setup DNS server using ...
taufik's user avatar
  • 3
-3 votes
1 answer
204 views

Dns errors in the domain [closed]

The Domain name is: www.intralifeindia.com I updated all records. when i checked up DNS details using http://dnscheck.pingdom.com i found an error as : Too few IPv4 name servers (1). Only one IPv4 ...
Mohammed Kumel's user avatar
0 votes
2 answers
146 views

DNS resolution speed

I'm trying to speed up my webpage load time in distant locations. My server is located in Germany and I installed the second one in LA, CA. Then I configured BIND to return LA IP for clients from ...
rush's user avatar
  • 1,989
0 votes
2 answers
210 views

Websites not resolving for SOME users

I have some websites that are not resolving for SOME users using a certain internet provider. Two of the websites are on totally different servers. If people try to get to the websites from their ...
Wendy W's user avatar
0 votes
0 answers
237 views

BIND server sends no query back

I've tried to configure my BIND-DNS server, so it will respond to to DNS requests made to a subdomain mail.prognoza.cu.cc of my domain prognoza.cu.cc . I've defined an NS record of mail.prognoza.cu....
prognoza's user avatar
  • 131
-1 votes
1 answer
111 views

Website monitoring frequently reporting 'dns resolution failed' on azure cloud service

Disclaimer: You'll usually find me on SO but not sure there is right place for this question! I have an Azure cloud service website monitored by NewRelic which will send me alerts when it's unable to ...
Phil Cooper's user avatar
2 votes
1 answer
87 views

Need help for configuring a dns server

I want to run a dns server to have my own nameservers : ns1.radicalteam.ir and ns2.radicalteam.ir I have a VPS and installed Centos 6.5 on it, and radicalteam.ir and soulati.ir domains I've set ...
Mostafa Solati's user avatar
-2 votes
1 answer
47 views

Pointing DNS to the Web [closed]

So, I'm at my wits end here. I've been dealing with this issue off an on for months, and about a week this time around. I have been using Fatcow as a Nameserver for some time, it started off as ...
Nathan Stotts's user avatar