dnsPromises.resolveMx(hostname)


使用域名系统协议解析 hostname 的邮件交换记录(MX 记录)。 当成功时,Promise 使用包含 priorityexchange 属性(例如 [{priority: 10, exchange: 'mx.example.com'}, ...])的对象数组进行解决。

Uses the DNS protocol to resolve mail exchange records (MX records) for the hostname. On success, the Promise is resolved with an array of objects containing both a priority and exchange property (e.g. [{priority: 10, exchange: 'mx.example.com'}, ...]).