Email Formats

{
  "mx": [
    "10 cluster4.us.messagelabs.com.",
    "20 cluster4a.us.messagelabs.com."
  ],
  "spf": [
    "v=spf1 include:mailgun.org ~all",
    "v=spf1 include:spf.protection.outlook.com include:spf.constantcontact.com include:_spf.salesforce.com include:spf.messagelabs.com include:hubspotemail.net include:spf.emailsignatures365.com ~all"
  ]
}