How do I set up a mail client application on my phone for mail from Plesk?

Question

Domain Name System

I set up mail for the domain [email protected]

Here are the CloudFlare settings:



Can't set up any mail client.

UPD: it worked after adding this line:



Is this normal or some kind of crutch? Maybe you need to specify specific subdomains, and not all at once with an asterisk?