Email Formats

{
  "mx": [
    "10 mx04.gboox.com.",
    "15 mx06.gboox.com.",
    "10 mx03.gboox.com.",
    "15 mx05.gboox.com.",
    "5 mx01.gboox.com.",
    "5 mx02.gboox.com."
  ],
  "spf": [
    "v=spf1 mx a -all"
  ]
}