I’m using Let’s Encrypt certificates for a while now. In the past, I used the standalone plugin (TLS-SNI-01) to get or renew my certificates. But now I switched to the DNS plugin. I run my own name servers with BIND, so it was a very low hanging fruit to get this plugin to work. [caption id=“attachment_3884” align=“alignnone” width=“640”] Clker-Free-Vector-Images/ pixabay.com/ Creative Commons CC0[/caption] To get or renew a certificate, you need to provide some kind of proof that you are requesting the certificate for a domain that is under your control.