The Domain Name System, usually referred to by the acronym DNS, is a hierarchical, distributed database where the keys are domain names.

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Windows Server 2008 sending regular TCP DNS requests to Forwarders

Our organization's primary DNS server is a Windows Server 2008 which two Forwarders set. I happened to notice on our firewall that this server is sending out regular TCP requests to the Forwarders in ...
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3answers
39 views

MX or A record issues

We have a mail server (Mailenable) which we are using to sell email accounts to our clients. We have one client that could not send email to a specific domain and they receieve this error from the ...
0
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0answers
29 views

DNS issue? Currently no logon servers available

While I have read through lots of post that have the same error message, I have not been able to find a solution that works for my situation. I have one server, Windows 2008, that I rebuilt about a ...
-3
votes
0answers
25 views

DNS Server Hardware Specifications for 100,000 or 200,000 Queries Per Second (QPS) [duplicate]

I hope everyone is fine. I am planning a load testing on DNS Server. I want a single client to send upto 200,000 QPS. The thing is that now I am going to buy/utilise the Hardware that will run the ...
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0answers
17 views

rndc fails to add zone, bind99 freebsd

I solved all rndc key errors and appear to perform most functions but when testing the addzone feature I am getting this error while trying to use rndc to add a fresh new zone -> rndc addzone ...
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0answers
21 views

Server making outbound dns requests [duplicate]

I have a cloud server with Rackspace and they have blocked DNS because of "excessive queries". I can find the info below when running ps, but I can not seem to locate where the file is that is making ...
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0answers
10 views

How to add master zone through PowerDNS API?

We have a PowerDNS master-slave setup. Now we want to use the PowerDNS API to automatically create master zones on the master server from our application. We created a master zone template, so when a ...
0
votes
1answer
12 views

Web content listing. Whitelist crafting [on hold]

What I'm trying to make easier is adding web portals to the whitelist on the firewall. I am looking for an easier way to get all sub domains and resources like google APIs. Sometimes it is hard to ...
0
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1answer
30 views

Is it possible to have 1 IP Address for a cluster of recursive DNS Servers?

Is it possible to have 1 or two static IP Address for a cluster of recursive (but not open relay) DNS Bind Servers that are being hosted on different cloud vpn providers? We want to have two DNS ...
-1
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0answers
20 views

Where can I find a good Anycast Provider? [on hold]

We run a VPN Service (much like unblock-us/blockless). We have two DNS servers that handle DNS requests. Unfortunately for us, they are currently at the same hosting company. We did talk about having ...
0
votes
1answer
60 views

Moving a web server without moving the email server

I need to move a client's website off their old host and onto their new host without changing their email server. I've read this extremely thorough answer on a similar question ...
3
votes
1answer
106 views

Can vSphere PowerCLI cmdlets execute from a PS1 file?

I'm looking to write an admin script that will: Delete a VM from vSphere Delete the VM's DNS entry Release the VM's IP address with our Windows DHCP server I can accomplish the first item via ...
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1answer
39 views

Individual accounts being spammed on server, even though DNS not hosted [on hold]

Disclaimer: Please pardon the newbery! I've got a dedicated linux server from HostGator that has around 100 accounts on it. Lately, dozens of these accounts get bombarded with junk mail a few times a ...
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0answers
23 views

Setting up local DNS cache? [on hold]

The currently available DNS servers for our business (in Indonesia) are extremely slow and seem to take a very long time to update new entries. We run Ubuntu servers (14.04) in my company, and ...
0
votes
0answers
9 views

Link A record with Laravel public directory

I set up VPS server. There I have Laravel deployed (/var/www/html/mysite/public). The issue is, in must be on mysubdomain.mysite.com. So i configured A Record for VPS IP and it really works. I set ...
0
votes
1answer
35 views

Bind9 on a dedicated server [duplicate]

I am using bind9 on a dedicated vps with ip: xx.xx.xx.xx And i have vps server with webserver and its ip: yy.yy.yy.yy Question: it is correct to point nameservers, e.g. ns1.domain.com/ns2.domain.com ...
0
votes
1answer
23 views

Debian 6 Not resolving hostnames

Regards, I've run into the following issue recently following an intrusion in to my VPS: Although resolv.conf is properly configured with the correct DNS servers the VPS can not resolve hosts. I ...
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0answers
5 views

Accessing localhost over WiFi by name [migrated]

This is my configuration: 1. Ubuntu 14.04 LAMPP server (localhost). 2. WiFi Access Point on ubuntu server. 3. Android device connected to WiFi access point. I can access localhost from android device ...
2
votes
2answers
169 views

Configuring Preferred/Alternate DNS Servers on a DNS server

I currently am running a single DNS server. If I don't set a Preferred/Alternate DNS server on the Ethernet controller and run the Best Practices Analyzer I get the following results: If I do ...
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4answers
37 views

Set up the right mx records for postfix/dovecot server

I recently set up a postfix/dovecot mail-server on my VPS (OVH), but for some reason I cannot receive e-mail through it. Is anyone able to check my DNS-records and my Postfix/dovecot configuration to ...
0
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0answers
6 views

I need to host several websites on IIS 8 in Windows Server 2012 for public access

I have a small server running Win 2012 and IIS and I have a public IP address from ISP. I bought several domain names for my websites. Usually I buy hosting service for hosting my website. Now I need ...
0
votes
1answer
37 views

Fragmented DNS Packet

The DNS response against my domain is 1228 bytes long and I need the packet to get fragmented in 3 packets. To achieve this I have set the MTU at name server (bind9 running on the machine) to be 500. ...
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1answer
37 views

VPS can ping host by IP but not by name

My Debian VPS can ping all host by name and IP but there's one host I can't ping by name. Ping by name failed but successful with IP However on my home PC i can ping that host by name and IP. I ...
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0answers
20 views

Simulate Domain registrations on local network [closed]

For academic purposes, I would like to simulate everything from registring domain to setting up VPS and website on local network. I would need to simulate name registrars, some sort of enviroment for ...
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0answers
19 views

Sub Domain not working?

I'm running nginx on ubuntu 14.04 LTS, on a kimsufi dedicated server. I'm pointing my domain (www.angrycrows.com) to my server using an A record. I don't have bind9 / dns hosting set up on my box. ...
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1answer
20 views

Sync DNS zones on a Standalone DNS server from a AD integrated zone

I need to install DNS services on a Server [which is a part of a domain but not a Domain Controller]. I have around 12 Domain Controllers which have DNS roles installed on them and they have around 25 ...
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1answer
27 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 ...
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votes
2answers
26 views

Domain Name Forwarding not working with github pages

I had my blog on github pages with a custom domain name blog.tamizhvendan.in and today I've moved it to a new domain name www.p3programmer.com by updating the CNAME record with www.p3programmer.com. ...
4
votes
0answers
52 views

Cisco DNS doctoring or Hairpinning?

I've the following configuration: CISCO 881, IOS 15.2(4)M6. On WAN interface is configured the 86.34.156.48/29 subnet from our ISP. Behind the router is staying 2 webserver. NAT: 86.34.156.51 <> ...
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0answers
27 views

How to set up internal dns to copy public dns plus additional entries?

I have a windows domain example.com and a public domain of the same name. How do I set up my company DNS to resolve all the subdomains like the public DNS does, and more? Do I have to copy the entries ...
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0answers
36 views

Whats the stance of HTTP/2 on using DNS SRV and why is that so? [closed]

https://tools.ietf.org/html/draft-ietf-httpbis-http2-17#section-3 does not reference https://tools.ietf.org/html/rfc2782 Obviously, previous hindrances in terms of slow transition and preestablished ...
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1answer
23 views

Accessing original files on a domain which has A-Record redirect to tumblr [on hold]

Hosting a tumblr on a custom domain, but allowing access to files that are at that domain, that are outside of the tumblr CMS. The custom domain I've got two A-Record DNS entries that point over to ...
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0answers
14 views

Understanding (and partially disabling?) DNSSEC for an internal domain

I am setting up a new DNS infrastructure for our internal HPC cluster environment. This involves providing a migration path from our existing DNS authorities and domains. For sake of example, let's ...
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0answers
22 views

How to find out about the nameserver configuration on a VPS

I recently inherited the management of a dedicated server with a number of VPSs installed on it, each of them hosting a number of websites and domains We require e-mail for one of the domains ...
2
votes
2answers
70 views

Windows Hosts DNS query for _ldap._tcp.domaincontroller, is this normal?

To make this easier to wrap my head around, here's what I'm using in my examples: deecee = my domain controller dctoo = another domain controller internal.foo.bar = the full DNSDomainName of ...
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0answers
14 views

forward all DNS queries to local server [closed]

i nedd to forward all the dns queries to a specific web page possibile to use dnsmasq? i use an ubuntu server Thank you
9
votes
4answers
561 views

How can I manage all of my domains with minimal configuration?

This is a Canonical Question about DNS server administration. I have one hundred or so domains. All of these domains need to be configured identically, but it seems like a huge waste of time to ...
1
vote
1answer
21 views

ntpd servers stuck in init state when defined by hostname, but sync correctly when defined by IP address

I started having an issue on a couple of our colo servers which is causing a fair bit of head scratching. I as alerted to clock skew on a couple of servers, and when I went to investigate ntpq -=p ...
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0answers
42 views

How to configure dynamic DNS updates when using stateless IPv6 addressing?

I am using Server 2012 with AD/DNS/DHCP. I have successfully configured stateful DHCPv6 however this does not accomplish what I would like to achieve so I disabled it and I'm currently trying to get ...
0
votes
0answers
20 views

Setup several subdomains on one dynamic IP addres behind pfSense [closed]

I have one public dynamic IP address I have a DynDNS name pointing to the pfSense firewall (and working fine) DynDNS setup has the "wildcard" enabled, so registered "mysubdomain.dyndns.com" also ...
0
votes
0answers
21 views

Cisco ASA firewall blocking requests to internally hosted DNS server

I have a DNS server behind a Cisco ASA firewall. The Cisco firewall is performing NAT. When inside the network, I can NSLOOKUP directly to the server. When the client is external, requests time out. ...
0
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0answers
27 views

How to setup dns server to return soa-record to any query? [closed]

I have configured dnsmasq so that it responds to any A-record request with always one ip address. Now I need to keep the same dnsmasq responded the same way to SOA-record queries. How can I get this? ...
1
vote
1answer
30 views

How to setup custom (first level) domain on Basic Azure machine?

I see that I can more or less easily create a custom second level domain aka contoso.cloudapp.net on Azure VM. But I would like to setup a real domain I purchased such a contoso.com without the ...
-1
votes
0answers
14 views

Our company website is not opening in internal network but working on external network [duplicate]

Our website is hosted in Bigrock, external users can access it normally but internal network not able to access it. My AD domain and website domain are same eg. "sample.in". Exchange server is ...
1
vote
1answer
10 views

AD Dynamic DNS not working with Linux IPv6

I have an AD DNS/DHCP enabled server. I have mixed Windows and Linux machines/servers. IPv4 is working great with DNS/DHCP, even for the Linux systems. IPv6 is working great except that it won't ...
0
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2answers
36 views

mx server: multiple domains on one ip

I'm just a bit confused about the correct DNS setup for hosting multiple domains on a single server with one ip. For example the mail server (domain/reverse: example.com) should host 3 domains: ...
3
votes
2answers
304 views

Load Balancing DNS Servers: UDP / TCP

I have been asked to rebuild our load balancing infrastructure in the data center. The original request was to load balance FTP servers. I tried doing that using the current load balancer (Piranha / ...
0
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2answers
23 views

Nameserver as CNAME [duplicate]

We have a ton of client sites pointing to ns1.hostingcompany.com. I'd like to create whitelabel nameservers so we can easily move sites/servers as needed. For example, I'd like to try Cloudflare ...
-2
votes
0answers
28 views

How to point my localhost website on Windows to a public domain name [closed]

I have just set up a WAMPserver2.5 localhost on my computer. I have everything running properly (I can execute PHP, MYSQL, etc...) and I forwarded port 80 to my ip adress 192.168.1.4 (I can get my ...
0
votes
1answer
40 views

Where does dig additional section nameserver information come from? [duplicate]

I have a client whose website has intermittent issues, which I believe are due to DNS lookup. When this happens and they do a ping, the host cannot be resolved. Therefore, I ran: dig ...