Polspam RHSBL RBL Very Hard Blacklist
The Polspam RHSBL is a domain-based blacklist (blocklist) that tracks suspicious domains identified by the Polish RBL server as sources of spam.
Updated on 18 Jun 2026: We updated this guide with the RHSBL-V lookup zone, Polspam's low-score guidance, and the authentication fixes to make before delisting.
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Check if you are listed on Polspam RHSBL RBL Very Hard Blacklist
And 143 other blocklists.
Spamhaus
0Spam
Cisco
NoSolicitado
URIBL
abuse.ro
ALPHANET
Anonmails
Ascams
BLOCKEDSERVERS
Calivent Networks
EFnet
JustSpam
Kempt.net
NordSpam
RV-SOFT Technology
Scientific Spam
Spamikaze
SpamRATS
SPFBL
Suomispam
System 5 Hosting
Team Cymru
Validity
www.blocklist.de Fail2Ban-Reporting Service
ZapBL
2stepback.dk
Fayntic Services
ORB UK
technoirc.org
TechTheftSpamhaus0SpamCiscoNoSolicitadoURIBLabuse.roALPHANETAnonmailsAscamsBLOCKEDSERVERSCalivent NetworksEFnetJustSpamKempt.netNordSpamRV-SOFT TechnologyScientific SpamSpamikazeSpamRATSSPFBLSuomispamSystem 5 HostingTeam CymruValiditywww.blocklist.de Fail2Ban-Reporting ServiceZapBL2stepback.dkFayntic ServicesORB UKtechnoirc.orgTechTheftSpamhaus0SpamCiscoNoSolicitadoURIBLabuse.roALPHANETAnonmailsAscamsBLOCKEDSERVERSCalivent NetworksEFnetJustSpamKempt.netNordSpamRV-SOFT TechnologyScientific SpamSpamikazeSpamRATSSPFBLSuomispamSystem 5 HostingTeam CymruValiditywww.blocklist.de Fail2Ban-Reporting ServiceZapBL2stepback.dkFayntic ServicesORB UKtechnoirc.orgTechTheftSpamhaus0SpamCiscoNoSolicitadoURIBLabuse.roALPHANETAnonmailsAscamsBLOCKEDSERVERSCalivent NetworksEFnetJustSpamKempt.netNordSpamRV-SOFT TechnologyScientific SpamSpamikazeSpamRATSSPFBLSuomispamSystem 5 HostingTeam CymruValiditywww.blocklist.de Fail2Ban-Reporting ServiceZapBL2stepback.dkFayntic ServicesORB UKtechnoirc.orgTechTheftSpamhaus0SpamCiscoNoSolicitadoURIBLabuse.roALPHANETAnonmailsAscamsBLOCKEDSERVERSCalivent NetworksEFnetJustSpamKempt.netNordSpamRV-SOFT TechnologyScientific SpamSpamikazeSpamRATSSPFBLSuomispamSystem 5 HostingTeam CymruValiditywww.blocklist.de Fail2Ban-Reporting ServiceZapBL2stepback.dkFayntic ServicesORB UKtechnoirc.orgTechTheftWhat is Polspam RHSBL-V blacklist?
The Polspam RHSBL RBL Very Hard Blacklist is the rhsbl-v.rbl.polspam.pl domain-based blocklist (blacklist) managed by the Polish RBL server, Polspam. It lists suspicious domain names during observation, rather than only IP addresses. Polspam labels this zone for spam-filter use with a low score and says administrators should not bounce mail because of this listing alone.
When an email contains or uses a listed domain, the result contributes to the email's overall spam score. A higher score increases the chance that the email is filtered into the junk folder. The RHSBL-V zone is separate from Polspam's danger RHSBL, where Polspam recommends rejection or a very high score. RHSBL-V is for observation and low scoring, so automatic rejection based only on this blocklist can block legitimate email.
Who runs Polspam RHSBL-V blacklist?
This blocklist is operated by Polspam, which describes itself as a Polish RBL server. The project is run as a hobby by a community of volunteers who work on spam reports. It is not a commercial entity. Polspam does not accept donations or sponsorships and does not offer electronic services in a legal sense. Its purpose is informational, providing data about domains reported for spamming by the internet community.
How to check a Polspam RHSBL-V listing
Because this is an RHSBL, the lookup uses the domain name itself, not a reversed IP address. Query the domain against the RHSBL-V zone. A positive A record means the domain is listed, and Polspam publishes 127.0.0.3 for this zone.
DNS lookup examplebash
nslookup example.com.rhsbl-v.rbl.polspam.pl # A listed domain returns 127.0.0.3
For related Polspam checks, the standard domain zone is rhsbl.rbl.polspam.pl and the hardened domain zone is rhsbl-h.rbl.polspam.pl. IP listings use separate BL zones, so do not treat an IP-only result as proof that the domain itself appears on RHSBL-V.
How do I get removed and delisted from Polspam RHSBL-V blacklist?
The delisting process for the Polspam RHSBL-V blacklist is strict and manual. There is no automated removal form. The operators state they do not delist domains known for repeated spamming. A delisting is generally only considered for a one-off incident believed to be unintentional, such as spam caused by an infected computer or a similar contained issue.
To request removal, you must send an email in plain text only. Messages sent in HTML or containing scripts, remotely loaded images, logos, tracking pixels, or other tracking elements are ignored. Be direct and detailed because the operators say they verify the information.
Your email should contain the following information:
- The listed domain name.
- The domain IP address and any mail host that sends for it.
- A detailed and honest description of why you believe the domain was listed on the blacklist. Treat this as a full explanation of any spam activity, whether intentional or not. Include how email lists were acquired, what the message contained, whether tracking elements were used, and whether third-party sending services were involved.
- Evidence that the cause has stopped, such as a removed spam source, a fixed infected system, a separated abusive client, or a cleaned landing page.
Before asking for delisting, fix the systems that caused the listing. For hosted domains, Polspam expects the sender domain, SMTP server domain, and hosting domain to be properly configured with DMARC at p=reject, working DKIM, SPF ending in -all, TLS 1.2 or higher, no recipient tracking objects in individual emails, and HTTPS on websites. Suped's product can help by turning DMARC aggregate reports into a source list, so unauthorized senders and failing SPF or DKIM traffic can be corrected before a delisting request.
Polspam lists domains, not just IP addresses. If your domain is listed, its host IP address can also be listed as a consequence. Polspam says the host IP address is delisted 7 days after the offending domain stops spamming and is delisted. Requesting an IP-only delisting is not the correct procedure.
What's the impact of being listed on Polspam RHSBL-V blacklist?
The impact of being listed on the Polspam RHSBL-V blacklist (or blocklist) is generally limited, but not meaningless. The operators explicitly state that their blacklist does not block any mail on its own. It provides a signal that a receiving mail server's spam filter can use.
A listing adds points to an email's spam score. If the total score from all checks exceeds the threshold set by the receiving administrator, the receiving system can deliver the email to spam or reject it in stricter configurations. A listing does not guarantee blocking, but it can damage sender reputation and increase deliverability problems.
Other blocklists
Polspam Blacklist (BL)
Organization
Polspam
Zone
bl.rbl.polspam.pl
Type
IP
Impact
Low
Delisting
Manual
Polspam Dynamic IP Blacklist (BL)
Organization
Polspam
Zone
bl-h4.rbl.polspam.pl
Type
IP
Impact
Low
Delisting
Manual
Polspam Level 1 Blacklist (BL)
Organization
Polspam
Zone
bl-h1.rbl.polspam.pl
Type
IP
Impact
Low
Delisting
Manual
Polspam Level 2 Blacklist (BL)
Organization
Polspam
Zone
bl-h2.rbl.polspam.pl
Type
IP
Impact
Low
Delisting
Manual
Polspam Level 3 Blacklist (BL)
Organization
Polspam
Zone
bl-h3.rbl.polspam.pl
Type
IP
Impact
Low
Delisting
Manual
Polspam RHSBL RBL Blacklist
Organization
Polspam
Zone
rhsbl.rbl.polspam.pl
Type
Domain
Impact
Low
Delisting
Manual
Polspam RHSBL RBL Danger Blacklist
Organization
Polspam
Zone
rhsbl-danger.rbl.polspam.pl
Type
Domain
Impact
Low
Delisting
Manual
Polspam RHSBL RBL Hard Blacklist
Organization
Polspam
Zone
rhsbl-h.rbl.polspam.pl
Type
Domain
Impact
Low
Delisting
Manual
Polspam Wrong Reverse Blacklist (BL)
Organization
Polspam
Zone
bl-h5.rbl.polspam.pl
Type
IP
Impact
Low
Delisting
Manual
