An MX record or Mail exchanger record is a type of resource record in the Domain Name System (DNS) specifying how Internet e-mail should be routed using the Simple Mail Transfer Protocol (SMTP). Each MX record contains a priority and a host name, so that the collection of MX records for a given domain name point to the servers that should receive e-mail for that domain, and their priority relative to each other.
You can change the MX records through the CPanel. Should you choose to do this and there is a problem regarding why you are not receiving emails from Mals, Paypal or PappaShop, you will need to ask for help from the email host.