Final answer:
The MX (Mail Exchanger Record) in DNS maps a domain to its mail servers. This record is crucial for routing emails to the correct servers based on their priority levels.
Step-by-step explanation:
The DNS record that maps a domain name to a list of mail servers for that domain is the MX (Mail Exchanger Record). These records are essential for directing email traffic to the correct email servers and ensuring that emails reach their intended destination. Each MX record points to a mail server that is configured to process emails for the domain. The priority of each server is also indicated, allowing for email delivery to be tried from the highest priority server down to the lowest in the case that the higher priority servers are unavailable.