Email Formats

{
  "mx": [
    "10 mx5.biz.mail.yahoo.com.",
    "20 mx1.biz.mail.yahoo.com."
  ],
  "spf": [
    "v=spf1 a mx include:mpmailserv.co.uk ?all",
    "v=spf1 include:mailgun.org ~all"
  ]
}