Email Formats

{
  "mx": [
    "10 spam.opto.com.tw.",
    "20 mx1.opto.com.tw.",
    "20 mx2.opto.com.tw.",
    "20 mx3.opto.com.tw.",
    "20 mx4.opto.com.tw."
  ],
  "spf": [
    "v=spf1 ip4:192.72.115.11 ip4:122.147.157.163 ip4:61.222.74.7 ip4:210.61.29.187 ip4:192.72.136.4 ip4:122.147.157.164 ip4:61.222.74.9 ip4:122.147.53.121 ip4:122.147.53.156 ~all"
  ]
}