I’ve set up Mailcow on a Digital Ocean server following The Digital Life Youtube tutorials (links below). All has gone well, except for the SSL certificate that shows up as invalid in the browser when visiting the control panel. Note that I haven’t turned off the Lets Encrypt SSL functionality.
I have also set the config file FQDN to “msg.mydomain.com”.
Any ideas on where I might begin my diagnostics would help?
Videos I’ve used: