Email Formats

{
  "mx": [
    "10 mx1.navercorp.com.",
    "20 mx2.navercorp.com."
  ],
  "spf": [
    "v=spf1 include:_spfblocka.navercorp.com include:_spfblockb.navercorp.com include:spf.worksmobile.com include:email.ncloud.com ip4:147.92.196.41 ip4:147.92.196.42 ~all"
  ]
}