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The Mail Exchange (MX) record is specifically designed to identify the email servers associated with a domain. When an email is sent to an address within a domain, the sending server queries the DNS records for that domain to locate the corresponding MX records. This allows it to know which server to contact in order to deliver the email efficiently. Each MX record points to a mail server that can receive emails for that domain, often prioritized based on the numerical value assigned to multiple MX records.

Address (A) records are used to map a domain name to its corresponding IP address, primarily for web hosting purposes rather than email routing. The Canonical Name (CNAME) record provides an alias for a domain name, which can simplify DNS management but does not directly handle email routing. The Name Server (NS) record specifies the authoritative DNS servers for a domain but does not direct email traffic. Therefore, the MX record is the precise type of DNS record utilized for managing email server associations, making it the correct answer.