Server Info

Our RBL is currently running on two hosts:
rbl.realtimeblacklist.com
rbl.iprange.net (will be offline on 01-01-2018)

How to use on Windows

C:\> nslookup 2.0.0.127.rbl.realtimeblacklist.com
Non-authoritative answer:
Name:    2.0.0.127.rbl.realtimeblacklist.com
Address:  127.0.0.2

How to use on Linux

$ host 2.0.0.127.rbl.realtimeblacklist.com
2.0.0.127.rbl.realtimeblacklist.com has address 127.0.0.2

How to use on mailservers

Icewarp Server > Mail > Security > DNS (Enable 'Use DNSBL' and add rbl.realtimeblacklist.com)

More mailservers will be added soon.