remote.billeskov.us has an A (IPv4) record (135.180.185.75) 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://remote.billeskov.us/.well-known/acme-challenge/letsdebug-test": dial tcp 135.180.185.75:80: connect: no route to host
Trace:
@0ms: Making a request to http://remote.billeskov.us/.well-known/acme-challenge/letsdebug-test (using initial IP 135.180.185.75)
@0ms: Dialing 135.180.185.75
@3081ms: Experienced error: dial tcp 135.180.185.75:80: connect: no route to host
A test authorization for remote.billeskov.us to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
135.180.185.75: Fetching http://remote.billeskov.us/.well-known/acme-challenge/e44rBAUF_UbNGXKy-KA0cG4PtVil6G9AAyBr6yZKb40: Error getting validation data