[Guide] Setting up a free secondary DNS

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Indeed which is why it has been replaced by the article that I wrote on the subject.

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setting up the slave DNS is just copy / paste of 2 lines or so. gives u a ton of extra DNS power.

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Well, it is a bit more involved than that as you have to create an account with the Secondary DNS provider, then add the domains that will be hosted. Some providers will ask for a DNS TXT record to verify even.

Then you’ll need to change the name servers with the domain registrar for each domain.

After that yeah, just one simple entry in the MiaB admin area on the Custom DNS page is all that is needed.

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Can someone tell me if I also need to update nameserver registration?
The issue I’m having that Squarespace(place I have a domain) does not allow me enter my secondary DNS provider (ovh) name server as it required it end with .mydomain? What should I do? Just leave the second record as ns2.mail.mydomain? Thanks

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Read here Nameservers and DNSSEC for Squarespace-managed domains – Squarespace Help Center

It talks about adding custom nameservers and glue records.

Your custom nameservers should be NS record >> ns1.mail.mydomain.com and ns2.mail.mydomain.com. Wait for propagation if TTL settings exist in their admin panel lower them for faster propagation.
Your glue records should be A record >> ns1.mail and ns2.mail
Or if you use IPV6 AAAA record >> ns1.mail and ns2.mail

At the bottom it says:

  1. To change your nameservers, click Use custom nameservers, then enter the information for at least two nameservers. Click Save in the top-right corner.
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I know how to add this records my questions is regarding something else. I will try to describe it more clearly.

I set up my second DNS server at ovh.
My nameservers are currently this:
ns1.mail.mydomain.com
ovh.domain.com

And glue records
ns1.mail.mydomain.com - A record of my domain IP
ns2.mail.mydomain.com - A record of my domain IP

Question is. Does my second glue record should be as it is or it should have ovh domain with it’s IP. If this is a case I can not set glue record that has domain different than .mydomain.com so I can not put there ovh.domain.com
I thought because of second nameserver that is oh.domain.con second glue record should also point to ovh domain and A record to it.
Hope it describes better.

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It will work with one. But this is not the way to go. Please report if you exeprince any issues.