Email Formats

{
  "mx": [
    "10 mail.choa.co.kr.",
    "5 mail2.choa.co.kr.",
    "8 smtp.choa.co.kr.",
    "10 domino.choa.co.kr."
  ],
  "spf": [
    "v=spf1 ip4:218.154.38.13 ip4:218.154.38.20 ip4:218.154.38.41 ip4:218.154.38.111 ip4:218.154.38.121 ip4:218.154.38.38 -all"
  ]
}