Email Deliverability
mathstodon.xyz
C
58 / 90
1
MX hosts
2
MX IPs
0
Blacklisted
2
No PTR
2
No FCrDNS
Issues (6)
criticalNo SPF record
criticalNo DMARC record
highMX IP 57.128.189.224 has no PTR (reverse DNS)
highMX IP 2001:41d0:808:e000:: has no PTR (reverse DNS)
lowOnly one MX host
infoDKIM could not be verified