Email Formats

{
  "mx": [
    "5 mx-doone-com-cn.icoremail.net.",
    "5 mail.twh.com.cn."
  ],
  "spf": [
    "v=spf1 ip4:202.101.116.0/24 ip4:139.162.6.121 include:spf.icoremail.net ~all"
  ]
}