Site has become unavailable after client adjusted DNS settings

Support
1

Hi there!

I have a bit of a challenge today. I’ve been happily using Netlify for over 3 years on a client project, but the client needed to configure some new email setup and decided to give it a shot themselves.

The end result: the site is unreachable, and I get the following warning message in the dashboard:

Screenshot 2023-11-24 at 14.28.45
Screenshot 2023-11-24 at 14.28.452778×938 180 KB

Netlify site name: https://dustmedia.netlify.app
Custom domain name: https://dustmedia.nl

The client claims to have only added an A and AAAA record and edited a TXT record. They said not to have changed anything else, especially nothing related to the nameservers.

I have tried to reset the DNS records by only applying the default values from the external provider (mijndomijn.nl), but I still get the same behaviour…

Running dig dustmedia.nl ns seems to point to the right nameservers:

dustmedia.nl.		3600	IN	NS	dns3.p08.nsone.net.
dustmedia.nl.		3600	IN	NS	dns2.p08.nsone.net.
dustmedia.nl.		3600	IN	NS	dns1.p08.nsone.net.
dustmedia.nl.		3600	IN	NS	dns4.p08.nsone.net.

Also, editing DNS records in the Netlify dashboard do seem to be taken effect when testing with the dig command.

I’m pretty clueless on what else to try. Could someone please help me out? Any help or direction would be much appreciated!

2

List of current DNS records:

Screenshot 2023-11-24 at 15.05.41
Screenshot 2023-11-24 at 15.05.412512×1888 431 KB

3

Hi, @r-oland1. The DNS records that normally route this domain to the systems that host the sites at Netlify are the NETLIFY and NETLIFYv6 type DNS records above.

When the A and AAAA type records were created, they overrode the NETLIFY and NETLIFYv6 type records for the same domain names (dustmedia.nl and www.dustmedia.nl). Because those IP addresses in the A and AAAA don’t point to Netlify’s systems, adding them took the site down at Netlify for those domain names. If you delete those A and AAAA records, the site’s Netlify hosting will start working again.

If there are other questions about this, please let us know.

1 Like
4

Your’r a life save Luke! Thanks for the quick support! :slightly_smiling_face:

For future readers: this thread helped me out as well in gaining some context.