Internal blocklist maintained by InterServer hosting. Lists IPs that have sent spam to InterServer-hosted domains. Primarily affects deliverability to addresses hosted on InterServer infrastructure.
Listed IPs associated with botnet-driven spam and malware distribution. Operated by an independent researcher known as Janit0r. Shut down in 2019 when the operator ceased maintenance. MTA queries ...
Small independent DNSBL. Discontinued. Historical reference only.
Right-hand side domain blocklist targeting sending domains and URLs found in spam. Checked against the domain in the From: header and links in the message body. Used heavily by spam…
User-report-driven listing of IPs that sent spam to SpamCop trap addresses or were reported via the SpamCop submission interface. Widely integrated into spam filters, ESPs, and mail gateways.
Lists domains appearing in spam message bodies — not the sending domain, but the URLs the message links to. Queried by SpamAssassin and many commercial filters during content scanning.
Multi-component blocklist covering IPs involved in spam, malware distribution, and exploit activity. Includes separate zones for spam, exploits, and domain abuse. Widely used by enterprise mail ...
Scandinavian-origin DNSBL focused on spam sources identified via trap networks. Used as a scoring component in some Nordic mail infrastructure.
Formerly listed phishing and spam sources. Discontinued around 2013. DNS queries return NXDOMAIN. Historical reference only.
Automated blocklist fed by fail2ban reports from a network of participating servers. Lists IPs involved in brute-force attacks, SSH scans, and other network intrusion attempts in addition to email ...
