Email Deliverability
yale.edu
B
72 / 100
1
MX hosts
8
MX IPs
0
Blacklisted
7
No PTR
7
No FCrDNS
Issues (10)
highMX IP 52.101.9.17 has no PTR (reverse DNS)
highMX IP 52.101.10.1 has no PTR (reverse DNS)
highMX IP 52.101.9.14 has no PTR (reverse DNS)
highMX IP 2a01:111:f403:f802::2 has no PTR (reverse DNS)
highMX IP 2a01:111:f403:c91d::b has no PTR (reverse DNS)
highMX IP 2a01:111:f403:f903:: has no PTR (reverse DNS)
highMX IP 2a01:111:f403:f804::3 has no PTR (reverse DNS)
mediumSPF uses ~all (softfail) instead of -all (hardfail)
lowDMARC policy is quarantine, not reject
lowOnly one MX host