Email Formats

{
  "mx": [
    "10 d188925a.ess.barracudanetworks.com.",
    "20 d188925b.ess.barracudanetworks.com."
  ],
  "spf": [
    "v=spf1 mx a ip4:192.10.0.17/32 include:zixmail.net include:mktomail.com include:mailgun.org include:spf.zixsmbhosted.com ~all"
  ]
}