If you search for installing Let’s Encrypt certificates on any images from Linode to Digital Ocean you will find several detailed sources. The problems arises when you are on the late steps and the automatic installation is returning different messages. As a networking person you might infer the real reasons but I have to state that it take me a while to realize the real causes. How I realized that something was wrong with the AAAA record ? That is another post ….
The message was complaining about an AAAA record which returned multiple values.
What is an AAAA record ? It is the IPV6 equivalent of an AAA record, which links your domain name with your static IP address of the web site. How come that the AAAA record was not set when I set up the AAA record? That is a question I have to ask for my domain name vendors (aka 1and1 or Namecheap).
What was the solution?
I manually added the AAAA records with a value equivalent with the IP address of my site, as follows:
- in the DNS manager added a few AAAA records as follows
AAAA @ IPV6 value
AAAA www IPV6 value
The next step was to check the AAAA records are getting propagated with tools from https://mxtoolbox.com or https://www.dnscheck.co/.