I'm not a big fan of HTTPS. Don't get me wrong, I agree with all of the security and comfort that it provides. I just hate the whole renewal process.
Domino 12 introduces a new way to do HTTPS and it's apparently much easier going forward. That's great news. Unfortunately, we hit a couple of snags on the way in, and I wanted to warn everyone about them - especially since the workarounds are so simple.
Domino Needs to Generate the CSR
You're probably thinking that that this is pretty obvious but if so, you're not thinking about wildcard certificates. We use a wildcard certificate *.mydomain.com.au - This allows us to use it across multiple systems, including Domino, Azure, some WordPress websites and a Drupal Website. We also use it in conjunction with several hosted services.
The wildcard certificate allows us to use the same certificate on different subdomains.