I am having 5 IP addresses pointing to multiple sub domains and are being hosted on different servers.
I was able to create certificates for sub domains pointing to single IP address but not for different IP addresses. I have tried using webroot path and manual authentication but no luck since other sub domains are being hosted on different servers LE is not able to validate I guess.
Since I am using failover for those domains SSL Verification is failing by saying mismatch occurred. When it is pointing to the Correct CNAME record no issues, if the server is down and if we change the CNAME record to other sub domain mismatch occurs. All I need a single Certificate for all sub domains pointing to different IP. Is there a solution for that?