Email Formats

{
  "mx": [
    "10 exchange2016.sistrade.com.",
    "0 douro.sistrade.com."
  ],
  "spf": [
    "v=spf1 mx a ip4:212.18.176.241/29 include:cavaleirosgutenberg.pt include:_spf.kmitd.com ~all"
  ]
}