Email Formats

{
  "mx": [
    "10 cluster1.us.messagelabs.com.",
    "20 cluster1a.us.messagelabs.com."
  ],
  "spf": [
    "v=spf1 include:_spf.google.com include:mailgun.org ip4:216.29.113.42 ip4:66.11.6.11 ip4:34.236.172.26 include:spf.messagelabs.com -all"
  ]
}