Email Deliverability
osuosl.org
B
84 / 100
4
MX hosts
8
MX IPs
0
Blacklisted
2
No PTR
3
No FCrDNS
Issues (4)
highDMARC policy is none (monitor only)
highMX IP 140.211.166.136 has no PTR (reverse DNS)
highMX IP 2605:bc80:3010::136 has no PTR (reverse DNS)
mediumMX IP 140.211.166.137 fails FCrDNS check