Email Formats

{
  "mx": [
    "20 mx1.biz.mail.yahoo.com.",
    "30 mx5.biz.mail.yahoo.com."
  ],
  "spf": [
    "v=spf1 include:secureserver.net -all",
    "v=spf1 include:_spf.mail.yahoo.com -all"
  ]
}