Email Formats

{
  "mx": [
    "20 mail01.vfc.com.vn.",
    "10 mail.vfc.com.vn."
  ],
  "spf": [
    "v=spf1 mx a ip4:183.91.25.131 ip4:113.161.107.154 mx:vfc.com.vn -all"
  ]
}