An MX record is a record that defines the mail destination host name for the target domain.
The mail transfer destination host name needs to be registered in A record. Refers to the A record set by the customer and acquires the IP address of the mail server. Therefore, please note that it will not operate normally if A record is not set.
配送先のメールサーバーを決定する際に使用。
ということは、配送先メールサーバーのAレコードって認識であってる？
あれ、結構複雑だなー
