Email Formats

{
  "mx": [
    "20 cluster8a.eu.messagelabs.com.",
    "10 cluster8.eu.messagelabs.com.",
    "40 d223377.a.ess.uk.barracudanetworks.com.",
    "30 mail.redingtoncounters.com.",
    "50 d223377.b.ess.uk.barracudanetworks.com."
  ]
}