Question

Can't generate Let's encrypt certificate for Nginx: "Error getting validation data"

Hello. I’ve been trying to generate a Let’s encrypt certificate, on my “Leslieville” droplet (following this guide) but without success.

While running this command,

sudo certbot --nginx -d etiennebaque.com -d www.etiennebaque.com

I got the following error:

Failed authorization procedure. etiennebaque.com (tls-sni-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: Error getting validation data, www.
etiennebaque.com (tls-sni-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: Error getting validation data

DNS for etiennebaque.com is hosted on Dreamhost. I checked the A record there, it has the correct droplet IP address in it.

I don’t know what to do now, so some help would be very much appreciated.

Many thanks, Etienne

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I just enabled a firewall, but nothing changed. Same error.

No, there’s no active firewall on my server.

Do you have any firewall setup on your server?


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Something else I did since my last message: I pointed Dreamhost to Digitalocean for that domain name (ns1/2/3.digitalocean.com), and created the relevant A records from the DO panel to point to the relevant droplet.

That said, the same error occurs and I don’t know what could be done at this point to solve this problem.