The Mailspike Blacklist


The mailspike services help identify and block known spammers. These services are intended to provide all receivers and reputation providers a baseline of data to help block the senders with the worst reputations. All listed IP addresses are being continually monitored and the lists are updated frequently.

Listing Policy

This blacklist combines both the and IP addresses from that are listed between L3 and L5. This combined zone can be used for a single DNS query to determine if messages coming from this IP address should be blocked. The DNS A record is always mapped either to ( or the corresponding A record from

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