Let's Debug

Test result for rdsgw.elgo.be using http-01

Debug
Requests made to the domain
Request to: rdsgw.elgo.be/84.192.241.47, Result: [Address=84.192.241.47,Address Type=IPv4,Server=Microsoft-IIS/10.0,HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://rdsgw.elgo.be/.well-known/acme-challenge/letsdebug-test (using initial IP 84.192.241.47)
@0ms: Dialing 84.192.241.47
@221ms: Server response: HTTP 404 Not Found

Debug
A and AAAA records found for this domain
rdsgw.elgo.be. 0 IN A 84.192.241.47
Challenge update failures for rdsgw.elgo.be in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/89550338
acme: error code 403 "urn:ietf:params:acme:error:unauthorized": Invalid response from http://rdsgw.elgo.be/.well-known/acme-challenge/2svs1e8ttPhHGjys6JBYBtkPln37lf574Gqq70lRjkc [84.192.241.47]: "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\r\n<html xmlns=\"http"
Debug
The IANA public suffix is the TLD of the Registered Domain
The TLD for rdsgw.elgo.be is: be
Debug
The current status.io status for Let's Encrypt
Operational

Submitted May 4 13:47:18 2020. Sat in queue for 2ms. Completed in 6s. Hide verbose information.