LetsEncrypt - Rackspace DNS

Hi,

It would be great if a/the dns-rackspace hook was added to the Letsencrypt plugin.

The benefits of this are:

  1. Rackspace DNS is free, so great savings there vs most of the others available
  2. Simpler DNS based letsencrypt configuration for systems not exposed to the internet, better security.

Alternatively where can I get to the configuration to install the hook directly?

Thanks in advance