Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com ), so withholding your domain name here does not increase secrecy, but …

I can't connect to your server, have you allowed/forwarded TCP port 80 in your firewall?

Arf... My apologize, firewall issue. We add the test source IP in trusted list and forgot to add let's encrypt servers. Do you know where I can find list of IP or domain I can trust?

Let's Encrypt validate you domain from multiple locations and they don't advertise the IP addresses they use, especially because it could change at any time.

[image] pyj: I tryed to start a watch ls -la /var/www/html/.well-known/acme-challenge/ and no file are created (perhaps it's normal...) It is normal. The --nginx option inserts temp code into your server block(s) for that domain. This involves a location block and a return statement with th…

Fail to renew NGINX cert

Help

pyj June 11, 2026, 10:55am 5

For log purpose, I put the link to the doc about that: Multi-Perspective Validation & Geoblocking FAQ

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Fail to renew NGINX cert

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