Let's Debug

Test result for frenchdo.red5.org using http-01

frenchdo.red5.org has an A (IPv4) record ( but a request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address.
Get http://frenchdo.red5.org/.well-known/acme-challenge/letsdebug-test: dial tcp connect: connection refused

@0ms: Making a request to http://frenchdo.red5.org/.well-known/acme-challenge/letsdebug-test (using initial IP
@0ms: Dialing
@2ms: Experienced error: dial tcp connect: connection refused
A test authorization for frenchdo.red5.org to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
DNS problem: SERVFAIL looking up A for frenchdo.red5.org - the domain's nameservers may be malfunctioning

Submitted Feb 25 18:22:18 2020. Sat in queue for 1ms. Completed in 6s. Show verbose information.