SSL Unrecognized Name error

We just moved our site to Dreamhost, set up SSL and Cloudflare, and are getting the following message from Firefox:

Secure Connection Failed

An error occurred during a connection to www.deathmetal.org. SSL peer has no certificate for the requested DNS name.

Error code: SSL_ERROR_UNRECOGNIZED_NAME_ALERT

The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
Please contact the website owners to inform them of this problem.

I saw a similar topic here which I did not understand, at least this part:

If you want to use Cloudflare’s certificate you will need to change the records in question from :grey: to :orange:.

When we pause Cloudflare protection, the domain works 100%

With Cloudflare on, it always generates this error.

Any help is appreciated.

That’s an interesting error to say the least - can’t say I’ve seen it before.

Try make another record, i.e cf-test, and proxy that so we can see if it’s reproducibile (and therefore something we can troubleshoot).

Unfortunately, I have no idea what these mean:

  1. Make another record
  2. And proxy

Where do I look to find answers?

Thanks to all who can offer help here. I talked with our host, and they responded:

I’m thinking they want you to create a DNS record for a test domain. Now,
I’m not sure if there is a specific way they want us to do this, so I’m
simply going to add the record using the following steps,

https://help.dreamhost.com/hc/en-us/articles/360035516812-Adding-custom-DNS-records

However, I do encourage yo that you confirm with them that this is what
they are requesting.

So if someone can confirm, we can go ahead and do this and run a further test.

DreamHost elaborated:

As far as I can tell the issue does occur when Cloudflare is
activated, so the issue right now has something to do with the services
on their end.

Looks like an exciting little mystery; I wish I knew more about such things.

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