Email Deliverability
gwangju.ac.kr
C
61 / 90
1
MX hosts
4
MX IPs
0
Blacklisted
3
No PTR
4
No FCrDNS
Issues (7)
criticalNo DMARC record
highMX IP 52.101.153.1 has no PTR (reverse DNS)
highMX IP 52.101.153.0 has no PTR (reverse DNS)
highMX IP 52.101.155.0 has no PTR (reverse DNS)
mediumMX IP 52.101.153.2 fails FCrDNS check
lowOnly one MX host
infoDKIM could not be verified