Email Deliverability
mailbox.org
B
68 / 90
5
MX hosts
10
MX IPs
0
Blacklisted
5
No PTR
5
No FCrDNS
Issues (7)
highMX IP 2001:67c:2050:104:0:1:25:1 has no PTR (reverse DNS)
highMX IP 2001:67c:2050:104:0:2:25:1 has no PTR (reverse DNS)
highMX IP 2001:67c:2050:104:0:3:25:1 has no PTR (reverse DNS)
highMX IP 2001:67c:2050:104:0:4:25:1 has no PTR (reverse DNS)
highMX IP 2001:67c:2050:104:0:ffff:25:1 has no PTR (reverse DNS)
mediumSPF uses ~all (softfail) instead of -all (hardfail)
infoDKIM could not be verified