Email Formats

{
  "mx": [
    "21 mail2.twai.com.",
    "10 mail.twai.com."
  ],
  "spf": [
    "v=spf1 ip4:152.160.34.134 ip4:66.103.238.111 ip4:180.151.81.219 ip4:152.160.24.214 a mx mx:123.net -all"
  ]
}