Email Formats

{
  "mx": [
    "10 d218801a.ess.barracudanetworks.com.",
    "20 d218801b.ess.barracudanetworks.com."
  ],
  "spf": [
    "v=spf1 include:mktomail.com include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com include:u123958.wl209.sendgrid.net ~all"
  ]
}