Email Formats

{
  "mx": [
    "20 mx3.tigertech.net.",
    "10 mx2.tigertech.net.",
    "10 mx1.tigertech.net."
  ],
  "spf": [
    "v=spf1 include:tigertech.net a mx/24 ptr ip4:216.33.91.27 ip4:216.33.90.0/23 ?all"
  ]
}