I don’t think so. The problem there I believe was that the authentication requests couldn’t get through from the ACME server to the web server, due to a reverse-proxy server.
The problem I have is that I can’t get the letsenctype-auto command to talk to the ACME server because it is on a network behind a forward-proxy server. Most utilities (yum, curl, wget etc) will check the http_proxy environment variable for details of a proxy server to use, but I don’t think letsencrypt does. I’m still working on this so will report back if I get it working.