An MX-record or Mail exchanger record is a type of resource record in the Domain Name System (DNS) specifying how e-mail should be routed using the Simple Mail Transfer Protocol (SMTP). Each MX record contains a priority and a hostname, so that the collection of MX records for a given domain name points to the servers that should receive e-mail for that domain, and their priority relative to each other.
Important! The hostname contained in an MX-record must have an A-record. CNAME-records or IP-addresses are prohibited in an MX record data. For '
mail.hostbasket.com' and '
backupmail.hostbasket.com' there has to be an A record.
What is an MX-record (Mail eXchanger)?
Related Questions 
