Email Formats

{
  "mx": [
    "10 whu.edu.cn.",
    "5 smtp.whu.edu.cn.",
    "1 mx-whu-edu-cn.icoremail.net."
  ],
  "spf": [
    "v=spf1 ip4:202.114.64.0/24 ip4:115.156.124.0/24 include:spf.icoremail.net -all"
  ]
}