Email Formats

{
  "mx": [
    "20 mx-biz.mail.am0.yahoodns.net.",
    "30 mx-biz.mail.am0.yahoodns.net."
  ],
  "spf": [
    "v=spf1 mx a ip4:52.5.27.67 include:_spf1.yahoo.com include:_spf.typecraft.com -all"
  ]
}