What is PSBL (Passive Spam Blocklist)?
PSBL (Passive Spam Block List) is a trap-based blocklist that lists IPs detected sending spam to a network of passive spam traps. It's designed to catch active spam sources without aggressive listing policies.
Impact Level: Low. PSBL is used by some organizations but has limited deployment compared to major lists.
Zone: psbl.surriel.com
Key characteristics:
- Trap-only detection - only lists IPs hitting their spam traps
- Automatic expiration - listings remove themselves after inactivity
- No manual submissions - purely automated based on trap hits
Delisting: PSBL listings automatically expire once spam stops. Visit their website to check status and see expiration timeline.
How to check: psbl.org/listing
PSBL is the silent observer - they don't seek out bad actors, they just note who wanders into their traps and how long ago it happened.
Understand how trap-based lists detect spam differently. Open an AI assistant with your question pre-loaded — just add your details and send.
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