How do you handle ssl certs for a redirected domain? Eg: https://www.olddomain.com to https://www.newdomain.com
Without ssl on olddomain.com the user gets a security error before the redirect but let's encrypt doesn't seem to let you set up or renew a certificate for a redirected domain, even if the server IP is the same (ie: if olddomain.com redirects via a htaccess file stored on the same IP as newdomain.com).
I can get around it by temporarily removing the redirect to set the certificate up and then putting it back afterwards, but in that scenario it won't renew so you're stuck doing it long term which doesn't seem like a viable option.