Hi, i just installed ubuntu server on my old laptop to try and experiment before i invest in a serious server. This is what i’m getting after answering the smtp questions:
Checking your domain name . . .
WARNING:: forum.example.com does not appear to resolve to 192.168.178.28
LET’S ENCRYPT cannot work if their servers cannot access your host by name.
Unless you think you know why this naive check failed, DO NOT USE Let’s Encrypt.
(A typical reason for failure is an AWS server with an elastic IP.)
You should probably answer “n” at the next prompt and disable Let’s Encrypt.
The IP adress is not the public IP but the one router is giving me. I appreciate if you could help. Thanks.