Email Formats

{
  "mx": [
    "20 mail.niu.edu.tw.",
    "5 nopam.niu.edu.tw."
  ],
  "spf": [
    "v=spf1 ip4:120.101.0.0/19 ip4:120.101.32.0/20 ip6:2001:288:A001::/48 include:_spf.google.com ~all"
  ]
}