Email Formats

{
  "mx": [
    "0 martinback.com."
  ],
  "spf": [
    "v=spf1 ip4:170.249.206.90 +a +mx +ip4:67.222.128.97  +ip4:158.106.130.253 +ip4:67.222.128.99 include:relay.mailchannels.net ~all"
  ]
}