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Blocklists & Spam Monitoring
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 Historical reference only.
smtpedia.com/schulte-blacklist-removal -
Blocklists & Spam Monitoring
TRIUMF Blacklist: Email Blocklist Removal Guide
Internal blocklist operated by the TRIUMF particle physics laboratory in Vancouver. No longer actively maintained or publicly deployed.
smtpedia.com/triumf-blacklist-removal -
Blocklists & Spam Monitoring
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…
smtpedia.com/truncate-blacklist-removal -
Blocklists & Spam Monitoring
FABELSOURCES: Email Blocklist Removal Guide
Dutch DNSBL that was part of the FabelSources anti-spam project. Discontinued. No longer operational.
smtpedia.com/fabelsources-removal -
Blocklists & Spam Monitoring
KEMPTBL: Email Blocklist Removal Guide
A DNSBL zone associated with Kemp Technologies and Spamhaus network infrastructure. No longer actively maintained. DNS responses are unreliable.
smtpedia.com/kemptbl-blacklist-removal -
Blocklists & Spam Monitoring
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.
smtpedia.com/0spam-blacklist-removal -
Blocklists & Spam Monitoring
JIPPG: Email Blocklist Removal Guide
JumpStart Internet Packet Pro Guard — independent spam blocklist from the early 2000s. Long discontinued. Historical reference only.
smtpedia.com/jippg-blacklist-removal -
Blocklists & Spam Monitoring
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.
smtpedia.com/konstant-blacklist-removal -
Blocklists & Spam Monitoring
SERVICESNET: Email Blocklist Removal Guide
Small independent DNSBL that has been discontinued. Historical reference only.
smtpedia.com/servicesnet-blacklist-removal -
Blocklists & Spam Monitoring
Spamhaus DBL: Email Blocklist Removal Guide
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…
smtpedia.com/spamhaus-dbl-removal
