BTW, what exactly is http error code 443: Connection Refused ?
This is what I get from trying to load embed.js from an https url:
$curl https://citadel-discussion.lexmachina.com/javascripts/embed.js
Whereas a non-https connection loads embed.js just fine, but then conflicts with the https connection to the html page. I’m not sure how you’d get a successful https connection to a DNS alias since whatever cert you have for ‘lexmachina.bydiscourse.com’ would not include ‘citadel-discussion.lexmachina’