Email Formats

{
  "mx": [
    "5 cacter.cetc.com.cn."
  ],
  "spf": [
    "v=spf1 ip4:220.181.46.90 ip4:220.181.39.39 ip4:220.181.78.204 ip4:220.181.78.247 ip4:220.181.78.233 -all"
  ]
}