DNS Authentication with LetsEncrypt for wildcard certs with Namecheap as your registrar
I'd been attempting to switch from http preferred challenges for cert renewal/verification. The reason is that the certbot program fails in cases where if I have existing domains in the cert adding more domains or subdomains to existing certs fails. Basically when you try to add new domains or where the subdomain is new to an existing domain that's listed in the cert, certbot using "--preferred-challenges http" fails with error messages that do not make sense to the average person, even those that that used Letsencrypt since their inception. In my case I had to add two domains to my cert and also to add a series of subdomains for each new domain to make the domain operate just like the existing ones would. I also had to add a…