Email Formats

{
  "mx": [
    "10 hpl-com-au.p10.mxthunder.com.",
    "40 hpl-com-au.p40.mxthunder.net.",
    "20 hpl-com-au.p30.mxthunder.net.",
    "30 30hpl-com-au.p30.mxthunder.net."
  ]
}