I understand that certbot is not supported under Debian 8, per this discussion:
We do not have the time or resources to upgrade our Debian 8 host (which, by the way, is working fine and doesn't need any Debian support), and therefore, we're looking for a certbot alternative that we can run on this host.
There are numerous alternatives listed here:
However, I'm posting this query to ask if anyone has been successful running one or more of these on a Debian 8 host. Specifically, we want to be able to use something akin to a "manual-auth-hook" which looks at DNS TXT records for authorization. We do not want to authorize via the "well-known" web-server methodology. We also need wildcard registration.
Again, due to resource constraints, we would be greatly appreciative of any recommendations, so that we can narrow down our search and won't have to spend the time to evaluate several dozen alternatives.
Thank you very much in advance.