Email Formats

{
  "mx": [
    "11 mail0a.sibs.pt.",
    "12 mail0b.sibs.pt."
  ],
  "spf": [
    "v=spf1 ip4:195.138.0.100 ip4:195.138.0.104 ip4:195.138.13.100 ip4:195.138.13.104 mx -all"
  ]
}