Overview
The 0spam project is known for its low false-positive rate. They operate two related but distinct lists: BL (Block List) and RBL. The BL focuses on flagging IPs that directly send spam, using conservative detection algorithms that prioritize avoiding false positives over catching every spam source.
How It Works
0spam uses its own detection infrastructure to analyze mail traffic. Like many blacklists they operate spam traps, but they're more cautious with listing decisions β multiple confirmations are required before an IP gets added.
How to Get Delisted
Visit 0spam.org to check your IP status and submit a removal request. Given their high listing threshold, being listed usually means there's a genuine problem to address.