Email Formats

{
  "mx": [
    "4 mailmx4.sinopec.com."
  ],
  "spf": [
    "v=spf1 mx ip4:219.143.118.3 ip4:123.124.249.224 ip4:223.119.51.171 ip4:183.242.52.3 ip4:114.247.161.131 ip4:36.112.50.231 ip4:61.135.14.231 ip4:219.142.191.131 ip4:110.16.192.6 ip4:1.180.19.6 ip4:218.189.28.251 ip4:218.188.67.105 -all"
  ]
}