Email Formats

{
  "mx": [
    "5 mta-un.kaifa.cn.",
    "5 mtal.kaifa.cn.",
    "5 mta-hk.kaifa.cn."
  ],
  "spf": [
    "v=spf1 include:spf.kaifa.cn include:spfptn.kaifa.cn include:spf.protection.partner.outlook.cn -all"
  ]
}