Email Formats

{
  "mx": [
    "10 cluster4.us.messagelabs.com.",
    "20 cluster4a.us.messagelabs.com."
  ],
  "spf": [
    "v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all"
  ]
}