Feedback for this topic now closed: My scenario is mail2.example.com is behind an Nginx reverse-proxy I followed this topic which helped me weed out my problem and hoping this saves someone else pain with this. After creating a certificate for the first time for a mail2 node bearing the full DNS node name of mail2.example.com (changed real domain for privacy of real domain) I found it would not renew the certificate despite working the first time. I followed topic 218002 for about 4 days of a...
