Spamhaus SBL+XBL
sbl-xbl.spamhaus.org
Operated by Spamhaus
Avg removal time
Varies by sub-zone (XBL: immediate; SBL: 2–5 days)
This blacklist severely impacts email deliverability with major ISPs and enterprise mail servers.
About Spamhaus SBL+XBL
A combined zone that includes both the SBL (Spamhaus Block List for spam sources) and XBL (Exploits Block List for compromised IPs). Commonly used when sites want to query both lists in a single DNS lookup.
Why am I listed?
A listing in this zone means the IP is listed on either the SBL or the XBL. See the individual SBL and XBL descriptions for specific criteria.
How to get delisted
Follow these steps in order to request removal from Spamhaus SBL+XBL.
- 1
Look up your IP at spamhaus.org to determine if you are listed on SBL, XBL, or both.
- 2
Follow the removal procedure for the specific sub-zone(s) where you are listed.
- 3
For XBL: self-service removal after cleaning the host.
- 4
For SBL: manual review process — submit a detailed removal request.
- 5
Both listings must be resolved independently.
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