Email Formats

{
  "mx": [
    "5 smtp2a-1.nbnco.com.au.",
    "5 smtp2a-2.nbnco.com.au.",
    "5 smtp3p-1.nbnco.com.au.",
    "5 smtp3p-2.nbnco.com.au."
  ],
  "spf": [
    "v=spf1 mx -all"
  ]
}