Email Formats

{
  "mx": [
    "20 mx.ct.mbox.net.",
    "10 mx.usa.net."
  ],
  "spf": [
    "v=spf1 a mx ptr ip4:208.74.144.0/24 ip4:207.239.169.0/24 include:spf.usa.net include:spf.cashedge.com include:relay.maichannels.net ~all"
  ]
}