Should you use Let's Encrypt for internal hostnames?
I will never understand the obsession people have with hiding their private server names.<p>If somebody gets any access to your local network, there are plenty of ways to enumerate them, and if they can't get access, what's the big deal?<p>I get that you may want to obfuscate your infrastructure details, but leaking infrastructure details on your server names is quite a red flag. It should really not happen. (Instead, you should care about the many, many ways people can enumerate your infrastructure details without looking at server names.)