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Medium Impact

How to Get Delisted from 0spam DNSBL

How to get delisted from 0spam — a spam detection network with fast automatic expiry.

Removal Method

Self-service web form or automatic expiry after 24 hours of clean traffic

Time to Removal

24 hours auto-expiry, or faster via self-service removal.

Auto Expiry

Yes — listings auto-expire approximately 24 hours after the last spam detection from your IP.

Overview

0spam (rbl.0spam.org) is a DNS-based blacklist that detects spam through its own network of sensors and spam traps. It maintains several sub-lists for different types of abuse (IP-based, URL-based, domain-based). 0spam is designed to be responsive — listings are added quickly when spam is detected and expire quickly when the spam stops.

Why You Might Be Listed

  • 1Your IP was detected sending spam to 0spam's network of spam traps
  • 2Your domain or URLs appeared in spam messages captured by 0spam sensors
  • 3Bulk unsolicited email was detected from your IP address

Step-by-Step Removal

1

Check your listing

Visit 0spam.org and use their lookup tool to check your IP or domain against their various blacklists (RBL, BL, NBL, URL, DBL).

2

Stop the spam source

Identify what is generating spam from your server. Check for compromised accounts, open relays, misconfigured mailing lists, or malware. Fix the root cause.

3

Request removal or wait for auto-expiry

0spam provides a self-service removal form on their website. After resolving the spam issue, submit a removal request. Alternatively, listings auto-expire approximately 24 hours after the last spam detection.

4

Verify clean traffic

After removal, send a few test emails and verify that your IP remains clean. Monitor with IsMyEmailBlacklisted to catch any relisting early.

Official Removal Portal

https://0spam.org/

Important Tips

  • 0spam has multiple sub-lists (RBL, BL, NBL, URL, DBL). Check all of them, as your IP may appear on more than one.
  • The fast auto-expiry makes 0spam relatively forgiving. Focus on fixing the spam source and the listing will clear itself.
  • 0spam is less widely used than Spamhaus or Barracuda, so prioritize those if you are listed on multiple blacklists.

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