Email Deliverability
rbb-online.de
A
90 / 100
1
MX hosts
8
MX IPs
0
Blacklisted
0
No PTR
2
No FCrDNS
Issues (3)
mediumMX IP 2a01:111:f403:ca04::2 fails FCrDNS check
mediumMX IP 2a01:111:f403:ca09::c fails FCrDNS check
lowOnly one MX host
rbb-online.de