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Welcome to backscatterer.org

Our DNSBL lists all Backscatterer and Sender Callout Abuser which we see at the UCEPROTECT-Network.
You can simply use this list via DNS at ips.backscatterer.org for scoring or rejecting bounces and sender callouts from abusive systems.
Operators of big mailservers or providers are recommended to download our zone from UCEPROTECT-Mirrors


Please read usage to find out how to use this list in safe mode without the risk of loosing real mail.


Listing Policy is quite simple. Every IP which backscatters or does sender callouts will be listed the next 4 weeks here.
Currently 72366 IP's are known for abusing the NET in this way!