Email Formats

{
  "mx": [
    "10 spam.sdbiotech.co.kr.",
    "20 ngw.sdbiotech.co.kr."
  ],
  "spf": [
    "v=spf1 include:_vpc.daouoffice.com ip4:35.216.117.18 ip4:35.216.21.90 ~all"
  ]
}