Email Formats

{
  "mx": [
    "20 cisco-esa02-smtp-opt.ox.com.",
    "10 cisco-esa01-smtp-cc.ox.com.",
    "20 cisco-esa01-smtp-opt.ox.com.",
    "10 cisco-esa02-smtp-cc.ox.com.",
    "100 mail.ox.com."
  ],
  "spf": [
    "v=spf1 mx ip4:208.81.212.0/22 ip4:204.92.49.0/24 -all"
  ]
}