Email Formats

{
  "mx": [
    "1 smtp.google.com."
  ],
  "spf": [
    "v=spf1 a mx ip4:72.216.212.0/24 ip4:72.212.144.0/24 ip4:70.177.0.0/24 include:_spf.google.com include:spf.constantcontact.com ip4:10.8.1.0/24 -all"
  ]
}