I am facing an acme challenge from letsecnrypt that includes DNS Validation and including a TXT record but I can see there is no value for the TXT record, How can I extract that acme challenge value for the TXT record.
Wildcard SSL certificates will only be used if webmin is managing your DNS. If you use your hosting providers name servers/dns this will not work. Why do you need a wildcard certificate ? When I create a subdomain It’s either a top level or sub server in virtualmin … therefore virtualmin will generate a certificate for the subdomain.
When you setup a multi tenant project, where subdomain are automatically generated by user by submitting the form. Therefore, those subdomains aren’t registered on DNS, that where Wildcard SSL comes in light.