Email Deliverability
slevomat.cz
A
92 / 100
5
MX hosts
10
MX IPs
0
Blacklisted
1
No PTR
1
No FCrDNS
Issues (4)
highMX IP 2800:3f0:4003:c14::1b has no PTR (reverse DNS)
mediumSPF uses ~all (softfail) instead of -all (hardfail)
lowDMARC policy is quarantine, not reject
infoBlocklist status unknown for 5 MX IP(s)