Email Deliverability
icourse163.org
B
75 / 90
1
MX hosts
1
MX IPs
0
Blacklisted
1
No PTR
1
No FCrDNS
Issues (5)
highDMARC policy is none (monitor only)
highMX IP 111.124.200.35 has no PTR (reverse DNS)
mediumSPF uses ~all (softfail) instead of -all (hardfail)
lowOnly one MX host
infoDKIM could not be verified