Email Formats

{
  "mx": [
    "10 mx1.sgict.gov.sg.",
    "20 mx2.sgict.gov.sg.",
    "50 mx3.sgict.gov.sg.",
    "50 smtp3.pdpc.gov.sg.",
    "50 smtp4.pdpc.gov.sg.",
    "60 mx4.sgict.gov.sg."
  ]
}