Email Formats

{
  "mx": [
    "20 mx-biz.mail.am0.yahoodns.net.",
    "30 mx-biz.mail.am0.yahoodns.net."
  ],
  "spf": [
    "v=spf1 ptr:yahoo.com ptr:yahoo.net include:_spf.emailcampaigns.net  a mx ip4:44.206.72.65 include:relay.mailchannels.net ?all"
  ]
}