Email Formats

{
  "mx": [
    "1 us2.mx3.mailhostbox.com.",
    "2 us2.mx1.mailhostbox.com.",
    "3 us2.mx2.mailhostbox.com."
  ],
  "spf": [
    "v=spf1 redirect=_spf.mailhostbox.com"
  ]
}