My domain is: themainstitch.biz
I ran this command:
sudo -H ./letsencrypt-auto certonly --webroot -w /var/www/themainstitch.biz -d themainstitch.biz
It produced this output:
IMPORTANT NOTES: - The following errors were reported by the server: Domain: themainstitch.biz Type: connection Detail: Fetching **https://themainstitch.biz.well-known/**acme-challenge/TrKu0f2EASY1zr89i9idXmidPyjN2EEhS35DVlK8cOI: Error getting validation data To fix these errors, please make sure that your domain name was entered correctly and the DNS A/AAAA record(s) for that domain contain(s) the right IP address. Additionally, please check that your computer has a publicly routable IP address and that no firewalls are preventing the server from communicating with the client. If you're using the webroot plugin, you should also verify that you are serving files from the webroot path you provided.
Apache 2, Ubuntu 14.02, Root access
It looks like it is missing the “/” on the verification, is that a bug?