dns mx

DNS configuration

Create a MX record that points mydomain.com. to app.mydomain.com. with priority 10.

To verify if the DNS works, the following command:

dig @1.1.1.1 mydomain.com mx

should return:

mydomain.com. 3600 IN MX 10 app.mydomain.com.

Note: wildcard * subdomains are also supported, subject to capabilities of your DNS provider. Refer to the reference documentation for more details.