Let's Debug

Test result for www.internal.cz using http-01

A test authorization for www.internal.cz to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
No valid IP addresses found for www.internal.cz

Submitted May 4 22:48:13 2020. Sat in queue for 2ms. Completed in 35s. Show verbose information.