Email Formats

{
  "mx": [
    "6 cdn.corp-email.cn.",
    "7 mail.biz-email.net.",
    "1 cnc.biz-email.net.",
    "1 cdn.corpemail.net."
  ],
  "spf": [
    "v=spf1 include:spf.corp-email.com include:spfb.corp-email.com ~all"
  ]
}