The Passive Spam Block List lists IPs that send mail to its spam traps. It's on by default in SpamAssassin, so a listing quietly pushes your mail toward spam folders on any server running a recent SpamAssassin. The fix is quick.
Free, no signup. See if PSBL, Spamhaus, SpamCop, or other major blacklists have you listed.
Examples: 203.0.113.42 or example.com
| Blacklist | Status | Response |
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Use the removal form at psbl.org. It's free, instant, and open to anyone, and the listing is gone from PSBL's servers within about half an hour. If you do nothing, the listing expires a few weeks after the spam stops.
Removal doesn't stop a relisting. If your IP keeps sending to PSBL's traps, it goes straight back on. The listing page shows the trap hits, which usually points to the cause: a hacked account, an infected machine, or a list with dead addresses.
Generator Labs checks your IPs against PSBL and hundreds of other blacklists and alerts you by email, Slack, SMS, or webhook every time a listing appears, so a relisting never goes unnoticed. Free for your first host.
No. It's free and instant.
A few weeks after your IP stops hitting the traps, if you don't remove it yourself.
SpamAssassin checks it by default, so many mail servers use it without anyone turning it on.