Email Formats

{
  "mx": [
    "10 mxbiz2.qq.com.",
    "5 mxbiz1.qq.com."
  ],
  "spf": [
    "v=spf1 include:spf.mail.qq.com ~all",
    "v=spf1 mx  include:spf.corp-email.com include:spfb.corp-email.com ip4:58.60.0.51 ip4:58.60.0.50 ip4:220.231.133.241 ip4:220.231.133.242 ~all"
  ]
}