Email Formats

{
  "mx": [
    "10 d273750a.ess.barracudanetworks.com.",
    "20 d273750b.ess.barracudanetworks.com."
  ],
  "spf": [
    "v=spf1 ip4:65.43.154.161 include:spf.ess.barracudanetworks.com ~all"
  ]
}