Here is a reference project that might help. I use DNS challenge but there is also some info on using http or https-tls challenge.
Let's encrypt needs to validate the domain so it needs to be able to look it up.
Here is a reference project that might help. I use DNS challenge but there is also some info on using http or https-tls challenge.
Let's encrypt needs to validate the domain so it needs to be able to look it up.