DNS Question

When hosting your own DNS servers you still need to buy a domain by a DNS registrar.

My question is what records does a DNS registrar setup to point all traffic for specific namespace to your public DNS servers.
ciscosuppAsked:
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atlas_shudderedSr. Network EngineerCommented:
Depends but the minimum is usually an A record and in some cases an MX
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David FavorLinux/LXD/WordPress/Hosting SavantCommented:
Your Registrar will be setup with custom hosts, which must resolve correctly.

Most Registrars require a minimum of 2 custom hosts.

Then your custom hosts, must correctly return zone records for a give domain + zone records returned by all custom hosts, best be the same.

So custom hosts will by your DNS servers.

Registrars don't really port traffic to your NS records. Instead, they provide this data first time a recursive query hits a root server + root server caches your records from your Registrar.

Crude analogy... Think of root servers as DNS for all Registrar held sites.

You don't really require to take any action to get this to work...

Well... I should say I work with DNS daily on client sites + I've found GoDaddy DNS works as you'd expect.

Most other Registrar DNS is glitchy. For example Namecheap requires sometimes deleting + reentering custom NS server records 2-3 times, before correctly populating records to root servers.

My suggestion. Just GoDaddy for registering your domains. Also, consider just using their DNS too, as their DNS works exactly like you'd expect.
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Tom CieslikIT EngineerCommented:
If you going to purchase public name and register it in some public registrar then from internet to all people on the world OUTSIDE YOUR COMPANY this will be primary DNS to find any information about your domain.

So if you're hosting some www website outside or inside your company you must define A record that will point www to your or some extrnal IP
Same you must do for other services like FTP and email if you have one.

If your internal domain name = external domain name then you also must configure some CNAME or Forwarders in your local DNS to let your internal computers reach external services.
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David FavorLinux/LXD/WordPress/Hosting SavantCommented:
Re-reading your initial question.

1) When hosting your own DNS servers you still need to buy a domain by a DNS registrar.

Yes.

2) What records does a DNS registrar setup to point all traffic for specific namespace to your public DNS servers.

There are an infinite number of permutations for DNS records.

3) About hosting your own DNS servers.

See my initial comment about this.

And, if you have to ask this question (about custom DNS servers), this suggests it's your first time doing this.

I'd suggest you stick with your Registrar's in house DNS system for now. Then study how to run your own DNS servers, if there's a true business requirement + implement your own custom DNS servers when zone files begin invading your dreams.
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Tom CieslikIT EngineerCommented:
If you going to install public DNS in your location

All you must is:
1. Register your name in DNS registar
2. Point DNS servers addresses under your public domain to your External IP for your organization.

That's all
Now you must configure your firewall to publish DNS inquiries, you must create z zone in your DNS to forward all traffic to all services you want provide.
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