Anti Spam Black Lists

Low

Medium

High

DNSBL

Notice

abuse.rfc-ignorant.org.

RHSBL List

Domains without a working abuse mailbox

badconf.rhsbl.sorbs.net.

RHSBL List

A or MX records point to bad address space

bl.spamcop.net.

X

User Submission DNSBL

RBL SCBL aims to block spam with minimal blocking or misidentification of wanted email.

bogusmx.rfc-ignorant.org.

RHSBL List

Domains without working mail exchanger records

cbl.abuseat.org.

X

Open Proxy DNSB

Data is used by XBL, so don't use both.

dialups.mail-abuse.org.

Dialup or Dynamic IP DNSBL

dnsbl.sorbs.net.

Major Spam Source DNSBL

dsn.rfc-ignorant.org.

RHSBL List

Domains refusing any mail from “<>”

dul.dnsbl.sorbs.net.

Dialup or Dynamic IP DNSBL

Dynamic User/Host List Database (DUHL)

http.dnsbl.sorbs.net.

Open Proxy DNSBL

Open Proxy Servers

ipwhois.rfc-ignorant.org.

RBL with Hosts don follow RFC rules

RBL contain domains or IP networks whose administrators choose not to obey the RFCs,

misc.dnsbl.sorbs.net.

Open Proxy DNSBL

The SORBS misc.dnsbl.sorbs.net zone contains all other proxies that could not be classified as an HTTP proxy or a SOCKS proxy.

nomail.rhsbl.sorbs.net.

RHSBL List

Domain owners say no mail ever sent with these domains

postmaster.rfc-ignorant.org.

RHSBL List

Domains without a working postmaster mailbox

rhsbl.sorbs.net.

au.sorbs.net

Aggregate zone (contains all RHS zones)

sbl-xbl.spamhaus.org.

X

Major Spam Source DNSBL

Spamhaus Block List

sbl.spamhaus.org.

Major Spam Source DNSBL

Spamhaus Block List

pbl.spamhaus.org.

X

X

Dialup or Dynamic IP DNSBL

Spamhaus Policy Block List

smtp.dnsbl.sorbs.net.

Open Relay DNSBL

List of Open SMTP relay servers.

socks.dnsbl.sorbs.net.

Open Proxy DNSBL

List of Open SOCKS Proxy Servers.

spam.dnsbl.sorbs.net.

Anti Spam DNSBL

List of hosts that have been noted as sending  spam/UCE/UBE to the admins of SORBS at any time

web.dnsbl.sorbs.net.

Open Formmail DNSBL

List of web (WWW) servers which have spammer or abusable vulnerabilities (e.g. FormMail scripts)

whois.rfc-ignorant.org.

RHSBL List

Domains without “correct” whois

xbl.spamhaus.org.

Open Proxy DNSBL

Exploits Block List - illegal 3rd party exploits.Incorporates CBL data and OPM data.

zombie.dnsbl.sorbs.net.

Bogon, Hijacked & Zombie Network DNSBL

List of networks hijacked from their original owners

zen.spamhaus.org.

X

X

X

Major Spam Source DNSBL

Spamhaus Block List - the SBL, XBL and PBL in combination

psbl.surriel.com

X

X

Spamtrap Driven or Automated DNSBL

Passive Spam Block List

ix.dnsbl.manitu.net

Spamtrap Driven or Automated DNSBL

automatically generated entries

ips.backscatterer.org

Behaviour Driven DNSBL

Backscatter and Sender Callout abusers

dnsbl-1.uceprotect.net (For Level 1)

x

Spamtrap Driven or Automated DNSBL

Level 1 lists single IP's only.

dnsbl-2.uceprotect.net (For Level 2)

Spamtrap Driven or Automated DNSBL

Strict Level 2 escalates within allocation

dnsbl-3.uceprotect.net (For Level 3)

Spamtrap Driven or Automated DNSBL