Thank you for reply.
I have a plenty of private (without public IP or nat) Windows server that I need to certificate, and the only method is DNS.
I’ve just written a custom script that speak with ISPConfig API (where my domain is hosted), but this requires to install a plenty of software (such as PHP or Node) that I prefer to not install in Windows server…
Please, reconsider to implement direct support for ISPConfig3 and more (such as CPanel or Plesk).
I think you will make a lot of very happy techincians…