Email Formats

{
  "mx": [
    "0 mx.usa.net.",
    "5 mx.ct.mbox.net."
  ],
  "spf": [
    "v=spf1 ip4:54.240.43.16 ip4:216.177.204.98 include:_spf.salesforce.com include:spf.usa.net include:spf.protection.outlook.com -all"
  ]
}