You must do the following:
To create the A record:
- In the domain register, or in any other domain managing service, you should indicate A record to the IP address which is indicated in the letter that you received when created the account (server IP address).
To create the MX record:
- You have to create a record/subdomain (for example, mail.domain.com) and it should be indicated to the Server IP address which is indicated in the letter that you received when created the account (server IP address).
- You have to create an MX record, giving it the same title the created A record/ subdomain has (for example, mail.domain.com).
