Email Formats

{
  "mx": [
    "10 d160661a.ess.barracudanetworks.com.",
    "15 d160661b.ess.barracudanetworks.com."
  ],
  "spf": [
    "v=spf1 mx a include:spf.constantcontact.com include:sendgrid.net include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com ~all"
  ]
}