Let's Debug

Test result for mail.wbv-ar.de using http-01

NoRecords
Fatal
No valid A or AAAA records could be ultimately resolved for mail.wbv-ar.de. This means that Let's Encrypt would not be able to connect to your domain to perform HTTP validation, since it would not know where to connect to.
No A or AAAA records found.
PublicSuffix
Debug
The IANA public suffix is the TLD of the Registered Domain
The TLD for mail.wbv-ar.de is: de
StatusIO
Debug
The current status.io status for Let's Encrypt
Operational

Submitted 37h12m2s ago. Sat in queue for 1ms. Completed in 0s. Hide verbose information.