Hi, thanks for the reply. The DNS TXT record is automatically generated in my VPS server's DNS when issuing the Let's Encrypt SSL certificate, but for some reason the _acme-challenge record wasn't detected, and I received a 400 validation error. I had the domain configured through GoDaddy to point the A record to the server's IP, and I even tried adding the _acme-challenge TXT record there as well, but that didn't work either. The way the certificate was finally issued correctly was when I changed the NS name servers to those of my server, allowing all DNS records to be controlled from the VPS. And voila, everything worked perfectly. I'm leaving this here in case it helps someone else. Regards.
lauburu
3
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