Email Formats

{
  "mx": [
    "20 mx2.krystal.io.",
    "10 mx1.krystal.io."
  ],
  "spf": [
    "v=spf1 ip4:185.194.90.23 ip4:77.72.2.107 include:relay.k.io a mx ip4:77.72.1.20 ~all"
  ]
}