Email Deliverability
customs.go.kr
A
79 / 90
2
MX hosts
2
MX IPs
0
Blacklisted
1
No PTR
1
No FCrDNS
Issues (4)
highDMARC policy is none (monitor only)
highMX IP 211.173.34.205 has no PTR (reverse DNS)
mediumSPF uses ~all (softfail) instead of -all (hardfail)
infoDKIM could not be verified