MX 레코드란?
The MX record is a type of resource record in the Domain Name System (DNS) that specifies the mail server responsible for accepting email messages on behalf of a recipient's domain. The MX record maps a domain name to a list of mail exchange servers for that domain, in priority order. The priority field in the MX record is used to determine the order in which mail servers should be tried if the first server is unavailable.
The MX record is used by email systems to route email messages to the correct mail server for delivery. When an email message is sent to a recipient, the sender's email system will look up the MX records for the recipient's domain to determine the best mail server to use for delivery. The email message is then sent to the highest priority mail server listed in the MX records. If that server is unavailable, the next highest priority server will be tried, and so on, until the email is delivered or all servers have been tried and delivery has failed.
In summary, the MX record is a critical component of the email system, as it helps ensure that email messages are delivered to the correct recipient.
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