资料来源 : pyDict

邮件交换记录,(功能变数名称服务器保存的记录。它可以从服务器正确传送邮件到所属主机)

资料来源 : Free On-Line Dictionary of Computing

Mail Exchange Record
     
         (MX Record) A {DNS} resource record type indicating
        which host can handle {electronic mail} for a particular
        {domain}.
     
        (1996-02-26)