certbot: Certbot failed to authenticate some domains
Full error message
Certbot failed to authenticate some domains (authenticator: nginx). The following errors were reported by the server: Type: unauthorized
Solution
Let's Encrypt HTTP-01 challenge failed. 1. DNS A/AAAA record must resolve to this server (check `dig +short <domain>`). 2. Port 80 must reach nginx (check firewall, Cloudflare proxy disabled for cert issuance, or use DNS-01 challenge). 3. Nginx must serve /.well-known/acme-challenge/ — confirm no rewrite intercepts it. 4. For Cloudflare-proxied domains: switch to DNS-01 challenge with certbot-dns-cloudflare plugin.
API access
Get this solution programmatically \u2014 free, no authentication.
curl https://depscope.dev/api/error/8843e9b60dbf9a2cc3c5db62609a90628730ca35c2f8c6676a4a50bc29f29154hash \u00b7 8843e9b60dbf9a2cc3c5db62609a90628730ca35c2f8c6676a4a50bc29f29154