Email Formats
{
"mx": [
"20 spam1.koreaexim.go.kr.",
"20 spam2.koreaexim.go.kr."
],
"spf": [
"v=spf1 ip4:61.40.93.26 ip4:61.40.93.27 ip4:61.40.93.28 ip4:211.171.208.10 ip4:211.171.208.11 ip4:211.171.208.66 ip4:211.171.208.80 ip4:211.171.208.81 ip4:211.171.208.121 ip4:211.171.208.122 include:spf.koreaexim.go.kr -all"
]
}