Email Formats

{
  "mx": [
    "10 mx-2.rightbox.com.",
    "10 mx-3.rightbox.com.",
    "10 mx-1.rightbox.com."
  ],
  "spf": [
    "v=spf1 include:spfa.mailendo.com include:spf.messagingengine.com ~all"
  ]
}