I have an old Debian Wheezy system, for which I need a certificate for Postfix and Courier (imap). There is an Apache webserver running, and only port 443 (not 80) is open in the firewall.
I’ve tried using both certbot-auto and getssl, but they both seem to advertise a ‘http:’//’ url to validate, which fails.
How can I force the webroot plugin to use https, or is there another plugin for certbot that is more suitable for my needs?
In getssl I’ve set CHALLENGE_CHECK_TYPE=“https”, but it still tries to connect to http.