Email Formats

{
  "mx": [
    "10 mx15.blackberry.com.",
    "10 mx13.blackberry.com.",
    "10 mx12.blackberry.com.",
    "10 mx16.blackberry.com.",
    "10 mx14.blackberry.com.",
    "10 mx11.blackberry.com."
  ],
  "spf": [
    "v=spf1 -all"
  ]
}