Email Formats

{
  "mx": [
    "5 mx1c25.carrierzone.com.",
    "10 mx2c25.carrierzone.com.",
    "15 mx3c25.carrierzone.com.",
    "20 mx4c25.carrierzone.com.",
    "25 mx4c28.carrierzone.com."
  ],
  "spf": []
}