Email Formats

{
  "mx": [
    "10 mailvip1.qunar.com."
  ],
  "spf": [
    "v=spf1 include:spf-a.qunar.com include:spf-b.qunar.com include:spf-c.qunar.com include:spf-d.qunar.com  include:spf-e.qunar.com -all"
  ]
}