As spam email is such a huge issue online, there are many sources available on the internet that publicly list known servers that send spam. These lists, commonly referred to as blacklists, are used by many email providers to help block spam emails sent to their users.
The following is a list of blacklists we will check:
- B.BARRACUDACENTRAL.ORG
- BL.DEADBEEF.COM
- BL.SPAMCOP.NET
- BLACKHOLES.FIVE-TEN-SG.COM
- BLACKLIST.WOODY.CH
- BOGONS.CYMRU.COM
- CBL.ABUSEAT.ORG CDL.ANTI-SPAM.ORG.CN
- COMBINED.ABUSE.CH
- COMBINED.RBL.MSRBL.NET
- DB.WPBL.INFO
- DNSBL-1.UCEPROTECT.NET
- DNSBL-2.UCEPROTECT.NET
- DNSBL-3.UCEPROTECT.NET
- DNSBL.ABUSE.CH
- DNSBL.CYBERLOGIC.NET
- DNSBL.SORBS.NET
- DRONE.ABUSE.CH
- DUINV.AUPADS.ORG
- DUL.DNSBL.SORBS.NET
- DUL.RU
- DYNA.SPAMRATS.COM
- DYNIP.ROTHEN.COM
- HTTP.DNSBL.SORBS.NET
- IMAGES.RBL.MSRBL.NET
- IPS.BACKSCATTERER.ORG
- IX.DNSBL.MANITU.NET
- KOREA.SERVICES.NET
- MISC.DNSBL.SORBS.NET
- NOPTR.SPAMRATS.COM
- OHPS.DNSBL.NET.AU
- OMRS.DNSBL.NET.AU
- ORVEDB.AUPADS.ORG
- OSPS.DNSBL.NET.AU
- OSRS.DNSBL.NET.AU
- OWFS.DNSBL.NET.AU
- OWPS.DNSBL.NET.AU
- PBL.SPAMHAUS.ORG
- PHISHING.RBL.MSRBL.NET
- PROBES.DNSBL.NET.AU
- PROXY.BL.GWEEP.CA
- PROXY.BLOCK.TRANSIP.NL
- PSBL.SURRIEL.COM
- RBL.INTERSERVER.NET
- RDTS.DNSBL.NET.AU
- RELAYS.BL.GWEEP.CA
- RELAYS.BL.KUNDENSERVER.DE
- RELAYS.NETHER.NET
- RESIDENTIAL.BLOCK.TRANSIP.NL
- RICN.DNSBL.NET.AU
- RMST.DNSBL.NET.AU
- SBL.SPAMHAUS.ORG
- SHORT.RBL.JP
- SMTP.DNSBL.SORBS.NET
- SOCKS.DNSBL.SORBS.NET
- SPAM.DNSBL.SORBS.NET
- SPAM.RBL.MSRBL.NET
- SPAM.SPAMRATS.COM
- SPAMLIST.OR.KR
- SPAMRBL.IMP.CH
- T3DIRECT.DNSBL.NET.AU
- TOR.DNSBL.SECTOOR.DE
- TORSERVER.TOR.DNSBL.SECTOOR.DE
- UBL.LASHBACK.COM
- UBL.UNSUBSCORE.COM
- VIRBL.BIT.NL
- VIRUS.RBL.JP
- VIRUS.RBL.MSRBL.NET
- WEB.DNSBL.SORBS.NET
- WORMRBL.IMP.CH
- XBL.SPAMHAUS.ORG
- ZEN.SPAMHAUS.ORG
