Email Formats

{
  "mx": [
    "10 hub.app.com.cn.",
    "10 mail.app.com.cn.",
    "10 mail2.app.com.cn.",
    "10 mail3.app.com.cn."
  ],
  "spf": [
    "v=spf1 ip4:61.129.62.64/26 ip4:159.27.13.83 ip4:52.175.19.116 ip4:20.2.147.119 include:spf.corp-email.com include:spfb.corp-email.com include:spf.protection.outlook.com -all"
  ]
}