0SPAM Blacklist: Email Blocklist Removal Guide
Independent DNSBL with both RBL (IP-based) and standard spam lists. Populated from trap networks and community reports. Used in some SpamAssassin configurations.
Blacklist Removal
DRMX: Email Blocklist Removal Guide
Small independent DNSBL. Discontinued. Historical reference only.
JIPPG: Email Blocklist Removal Guide
JumpStart Internet Packet Pro Guard — independent spam blocklist from the early 2000s. Long discontinued. Historical reference only.
Konstant: Email Blocklist Removal Guide
Part of the MAPS (Mail Abuse Prevention System) relay blocklist family. MAPS was acquired by Trend Micro and the public free DNSBL service was discontinued. Enterprise subscription only.
SpamCop BL: Email Blocklist Removal Guide
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.
Barracuda Reputation BL: Email Blocklist Removal Guide
IP reputation list maintained by Barracuda Networks, fed by over 200,000 spam sensors globally. Used natively by Barracuda email security appliances and optionally by any MTA via DNSBL query.
UCEPROTECT Network: Email Blocklist Removal Guide
Three-level IP blocklist covering individual IPs (Level 1), ASN ranges with high spam ratios (Level 2), and entire ASN blocks (Level 3). Known for aggressive listing policies and paid express…
SURBL: Email Blocklist Removal Guide
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.
Abusix Mail Intelligence: Email Blocklist Removal Guide
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 ...
Mailspike BL: Email Blocklist Removal Guide
Reputation-based DNSBL combining spam trap data and complaint signals. Also operates a whitelist (wl.mailspike.net) for senders with verified good sending practices.
