Email Deliverability
coi.cz
B
79 / 100
1
MX hosts
8
MX IPs
1
Blacklisted
0
No PTR
0
No FCrDNS
Issues (6)
highMX IP 52.101.73.8 is blacklisted
highMX IP 52.101.73.4 is blacklisted
highMX IP 52.101.68.0 is blacklisted
highMX IP 52.101.73.11 is blacklisted
lowDMARC policy is quarantine, not reject
lowOnly one MX host