LashBack UBL: Email Blocklist Removal Guide
Unsubscribe Blocklist: lists IPs that send mail to addresses that have previously unsubscribed. Targets non-compliance with unsubscribe requests rather than spam content.
Blacklist Removal
RBL.JP: Email Blocklist Removal Guide
Japanese DNSBL covering spam sources affecting Japanese mail systems. Primarily deployed in Japanese ISPs and corporate mail environments.
NoSolicitado: Email Blocklist Removal Guide
Latin American blocklist targeting spam affecting Spanish-language email users. Primarily deployed in Spanish and Portuguese-speaking regions.
SWINOG Blacklist: Email Blocklist Removal Guide
Swiss network operators group blocklist. Maintenance has become inconsistent. Primarily historical relevance to Swiss email infrastructure.
S5H.NET Blacklist: Email Blocklist Removal Guide
Simple independent DNSBL listing IPs that send mail to S5H.net's trap network. Low maintenance overhead for operators, automatic listing and expiry.
Schulte Blacklist: Email Blocklist Removal Guide
Independent DNSBL operated by a German researcher. Has been discontinued. DNS queries return NXDOMAIN or SERVFAIL. Historical reference only.
TRIUMF Blacklist: Email Blocklist Removal Guide
Internal blocklist operated by the TRIUMF particle physics laboratory in Vancouver. No longer actively maintained or publicly deployed.
TRUNCATE: Email Blocklist Removal Guide
The highest-severity tier of GBUdb's IP reputation system. Lists IPs with so poor a reputation that no legitimate mail has been observed from them. Used by SpamStopsHere and enterprise mail…
Woody’s SMTP Blacklist: Email Blocklist Removal Guide
Small independent Swiss SMTP blacklist. Discontinued. DNS queries no longer return valid responses. Historical reference only.
KEMPTBL: Email Blocklist Removal Guide
A DNSBL zone associated with Kemp Technologies and Spamhaus network infrastructure. No longer actively maintained. DNS responses are unreliable.
