Email Formats

{
  "mx": [
    "5 d256789a.ess.barracudanetworks.com.",
    "10 d256789b.ess.barracudanetworks.com."
  ],
  "spf": [
    "v=spf1 +a +mx +ip4:52.43.160.120 +ip4:44.226.107.251 +include:spf.ess.barracudanetworks.com -all"
  ]
}