Nettalk, LetsEncrypt and wildcard certificates

[PaulMacFarlane]

Is it possible to retrieve a wildcard via LetsEncrypt using Nettalk?

[Bruce]

Hi Paul,

I believe so, although it's not a road I've gone down myself yet.
It is limited to DNS-Challenge though. You can't get one with HTTP challenge.

I'm not sure the use-case with NetTalk is clear though. So perhaps you want to tell us more about your setup, and we can dig into that a bit deeper.

Cheers
Bruce

[PaulMacFarlane]

We are trying to handle obtain a certificate to use on an internal server for communicating with Office365.
The communication is handled from our internal server to O365, but it does require a cert to identify itself.
Doesn't need to be access from the public network.

We've gone down the road of using Caddy, etc. but the issue is that Godaddy no longer supports DNS Challenge using v1 of their API.  V3 requires OAuth/Bearer token.

So, looking into somehow obtaining a wildcard on a public server and then distributing it to the internal server.

I did not know the wildcards were limited to DNS Challenge which puts us right back to where we started!