Email Formats

{
  "mx": [
    "3 mdn.corpemail.net.",
    "4 mdn.corp-email.cn.",
    "1 sunnyoptical-com.corpsmtp.net.",
    "2 sunnyoptical-com.corpsmtp.cn."
  ],
  "spf": [
    "v=spf1 include:spf.corp-email.com include:spfb.corp-email.com ip4:61.175.134.18 -all"
  ]
}