What is PSBL?
DNS zone: psbl.surriel.com
The Passive Spam Block List (PSBL), run by Rik van Riel, is built passively from spam received at trap addresses: if an IP delivers mail to a PSBL trap, it gets listed; if it stops, the listing ages out on its own within a couple of weeks. There is no judgment of content and no complaint pipeline, just trap evidence.
Its removal philosophy is equally simple. The project openly allows self-service delisting for any IP via psbl.org, on the theory that legitimate senders will fix their problem and spammers will relist themselves immediately through fresh trap hits. That honesty system keeps the list clean without a support queue.
How serious is a PSBL listing?
Moderate but real. PSBL is a common component in SpamAssassin-style scoring setups and some smaller servers block on it directly. A listing typically adds spam-score points at many receivers rather than causing universal hard bounces, which makes it worth clearing promptly and cheaply, which it is.
Why your IP got listed
Mail delivered to a PSBL spam trap
Trap addresses hide in old, scraped and purchased lists. One delivery is enough; the trap cannot opt in, so the mail is spam by definition.
A compromised account or open relay
Third-party spam routed through your server reaches traps under your IP.
Recycled IP history
A fresh cloud IP can arrive listed from a previous tenant's traffic. The instant self-delist makes this painless to fix.
How to remove your IP from PSBL
Look up and remove the IP at psbl.org
Enter the IP on the PSBL website; if listed, the same page offers immediate removal with an email confirmation. The delisting is effective right away and free.
Find what hit the trap
Check your sending around the listing date: which campaign, which list segment, which account. If nothing you recognise sent mail then, hunt for a compromised mailbox, web form or relay.
Remove the rot from your lists
Cut segments with unknown provenance, addresses that never engaged, and anything acquired rather than opted in. Trap addresses are indistinguishable from other dead addresses in those segments, so the whole segment goes.
Re-check in a week
A repeat listing means traps are still being hit and the source is still live. Iterate on steps 2 and 3 until the listing stays gone.
How long removal takes
Self-service removal at psbl.org is effective immediately. Left alone, listings also expire automatically roughly one to two weeks after the last trap hit. Relisting is instant on any new hit, so the durability of your delisting depends entirely on your list hygiene.
After delisting: the part most guides skip
Getting off PSBL removes a block; it does not restore trust. While you were listed, mailbox providers were accumulating their own negative signals about your domain (bounces, spam-folder placements, dropped engagement), and those persist after the listing clears. If placement does not bounce back within a couple of weeks, the domain needs a structured re-warming: reduced volume, genuinely engaged recipients and clean authentication, sustained until providers trust the domain again.
Frequently asked questions
How do I remove my IP from PSBL?
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Go to psbl.org, look up the IP, and use the removal option on the listing page. It is free, self-service and effective immediately. No justification or account is required, by design.
Why was my IP listed on PSBL?
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Your IP delivered mail to one of PSBL's spam-trap addresses. Traps are dead addresses that no consent process would produce, so a hit almost always traces to purchased or stale list segments, or to spam flowing through a compromised account or relay.
Does a PSBL listing expire on its own?
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Yes, typically within a week or two after the last trap hit. But since self-removal is instant, there is no reason to wait: delist now, then fix the list-hygiene problem so you stay off.