Here you can find a list of popular RBL Real-time Blackhole List Anti Spam Black List Sites.
It is recommended to use RBL sites in your Anti Spam filter for the best blocking of Spam senders.
You can use a few of them at least 2-3. If using too many it can slow down your site and catch real mail as spam.
In Protector UTM Firewall you can easily choose Low, Medium or High level of RBL lists that have already been preconfigured.
This way you don't have to make the choise yourself.
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Low |
Medium |
High |
DNSBL |
Notice |
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abuse.rfc-ignorant.org. |
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RHSBL List |
Domains without a working abuse mailbox |
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badconf.rhsbl.sorbs.net. |
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RHSBL List |
A or MX records point to bad address space |
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bl.spamcop.net. |
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X |
User Submission DNSBL |
RBL SCBL aims to block spam with minimal blocking or misidentification of wanted email. |
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bogusmx.rfc-ignorant.org. |
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RHSBL List |
Domains without working mail exchanger records |
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cbl.abuseat.org. |
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X |
Open Proxy DNSB |
Data is used by XBL, so don't use both. |
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dialups.mail-abuse.org. |
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Dialup or Dynamic IP DNSBL |
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dnsbl.sorbs.net. |
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Major Spam Source DNSBL |
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dsn.rfc-ignorant.org. |
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RHSBL List |
Domains refusing any mail from “<>” |
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dul.dnsbl.sorbs.net. |
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Dialup or Dynamic IP DNSBL |
Dynamic User/Host List Database (DUHL) |
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http.dnsbl.sorbs.net. |
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Open Proxy DNSBL |
Open Proxy Servers |
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ipwhois.rfc-ignorant.org. |
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RBL with Hosts don follow RFC rules |
RBL contain domains or IP networks whose administrators choose not to obey the RFCs, |
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misc.dnsbl.sorbs.net. |
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Open Proxy DNSBL |
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nomail.rhsbl.sorbs.net. |
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RHSBL List |
Domain owners say no mail ever sent with these domains |
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postmaster.rfc-ignorant.org. |
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RHSBL List |
Domains without a working postmaster mailbox |
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rhsbl.sorbs.net. |
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au.sorbs.net |
Aggregate zone (contains all RHS zones) |
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sbl-xbl.spamhaus.org. |
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X |
Major Spam Source DNSBL |
Spamhaus Block List |
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sbl.spamhaus.org. |
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Major Spam Source DNSBL |
Spamhaus Block List |
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pbl.spamhaus.org. |
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X |
X |
Dialup or Dynamic IP DNSBL |
Spamhaus Policy Block List |
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smtp.dnsbl.sorbs.net. |
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Open Relay DNSBL |
List of Open SMTP relay servers. |
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socks.dnsbl.sorbs.net. |
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Open Proxy DNSBL |
List of Open SOCKS Proxy Servers. |
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spam.dnsbl.sorbs.net. |
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Anti Spam DNSBL |
Targets that are listed to sent spam/UCE/UBE to the admins of SORBS at any time |
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web.dnsbl.sorbs.net. |
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Open Formmail DNSBL |
List of web (WWW) servers which have spammer or abusable vulnerabilities (e.g. FormMail scripts) |
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whois.rfc-ignorant.org. |
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RHSBL List |
Domains without “correct” whois |
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xbl.spamhaus.org. |
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Open Proxy DNSBL |
Exploits Block List - illegal 3rd party exploits.Incorporates CBL data and OPM data. |
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zombie.dnsbl.sorbs.net. |
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Bogon, Hijacked & Zombie Network DNSBL |
List of networks hijacked from their original owners |
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zen.spamhaus.org. |
X |
X |
X |
Major Spam Source DNSBL |
Spamhaus Block List - the SBL, XBL and PBL in combination |
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psbl.surriel.com |
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X |
X |
Spamtrap Driven or Automated DNSBL |
Passive Spam Block List |
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ix.dnsbl.manitu.net |
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Spamtrap Driven or Automated DNSBL |
automatically generated entries |
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ips.backscatterer.org |
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Behaviour Driven DNSBL |
Backscatter and Sender Callout abusers |
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dnsbl-1.uceprotect.net (For Level 1) |
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x |
Spamtrap Driven or Automated DNSBL |
Level 1 lists single IP's only. |
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dnsbl-2.uceprotect.net (For Level 2) |
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Spamtrap Driven or Automated DNSBL |
Strict Level 2 escalates within allocation |
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dnsbl-3.uceprotect.net (For Level 3) |
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Spamtrap Driven or Automated DNSBL |
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