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Differing Internal vs External MX records

The setup: The business runs an internal DNS server not accessible to the public internet. The business's domain is registered with a registrar and the authoritative name servers outside the local ...
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1answer
49 views

I am confused about the Authoritative DNS Server actual definition

I search for this a lot and the answer is the same everywhere: Authoritative servers give either the answer or "NO", the host does not exist. Non-Authoritative servers use either cache or a ...
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1answer
159 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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1answer
26 views

DNS zone servicing concepts

Currently I am working out some concepts about how DNS works and am running into a question I can't easily find an answer to on the internet. I am looking for an answer based on a set of questions ...
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1answer
463 views

Windows 2012 R2 Authorative DNS Server returns root hints

I have a non domain joined authoritative dns server for a zone, I've disabled dns recursion in server settings. When i do a query with dig @ns1.mydomain.tld . it returns the root hints. I've read ...
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2answers
266 views

How to directly query authoritative DNS nameserver from command line, bypassing cached servers? [closed]

How can I directly query authoritative DNS nameserver from Linux and Mac OS X command line, bypassing cached servers? This is helpful when wanting to immediately verify newly-created DNS host names ...
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1answer
87 views

Why would delegated nameservers ever be different to authoritative nameservers?

If you go on intodns.com and type in stackoverflow.com, the parent server tells me that nameservers for the domain are here: ns1.serverfault.com. ['198.252.206.80'] [TTL=172800] ...
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0answers
69 views

Authoritative DNS for other domain requirements

We're moving dns servers (managed with bind) for our main domain (let's call it main.org) to new servers. Since we're having some issues to update glue records with current registrar we thought to ...
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2answers
3k views

Please explain Authoritative Nameserver and Recursive Resolver

I am new to networking and all this DNS thing. I have the following questions What is an Authoritative Nameserver ? What is a Recursive Resolver ? Please help/guide me out on this. I have ...
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2answers
585 views

Multiple authoritative DNS server on same IPv4 address

I'd like to maintain a DNS tunnel on my self-hosted server at example.com. I also have a DNS server on it, which serves everything for example.com. I'm currently using dns2tcp for DNS tunneling, on ...
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2answers
2k views

Running dnsmasq as an authoritative DNS server

I am trying to implement a dynamic dns service for my computers. I have pointed h.lohray.com to my EC2 instance in the NS record of lohray.com and have installed dnsmasq on that system and have made ...
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1answer
72 views

dns hierarchy not returning ip address

(DNS1 ,WWW1, Gateway1) (sub-internal network) (DNS0,WWW0,Gateway0) (internal network) DNS1: 192.168.250.3/24 WWW1: 192.168.250.4/24 Gateway1: 192.168.250.1 /24 (internal) :: 192.168.0.150 ...
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1answer
318 views

Moving a Registered Authoritative Nameserver to Another Server

We had a colo server and registered a domain for it. When we did that we had to provide the name and the IP address of the nameservers (pointing to the server) as the nameserver names were within that ...
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2answers
774 views

Help setting up a secondary authoritative DNS server

We have three Authoritative DNS servers and three recursive/caching DNS servers on my campus. Authoritative servers DNS1- Windows 2003 DNS2- Old Red Hat -----> Replacing w/ newer version DNS3- ...
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2answers
2k views

Multiple nameservers, how do they work when they can't resolve a query?

I have 4 nameserver set for my domain: ns1.nameserver.com, ns2.nameserver.com, ect... I know that if one is down an other one will be used. But if the first is up and running and is asked for a ...