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Polspam Wrong Reverse Blacklist (BL) check

The Polspam Wrong Reverse Blacklist (BL) is an IP-based blocklist (or blacklist) from the Polish RBL Polspam that lists IP addresses with misconfigured or incorrect reverse DNS (PTR) records.

Polspam Wrong Reverse Blacklist (BL) check
Blocklist checker
Check your domain or IP against 144 blocklists.
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Abusix
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abuse.ro logoabuse.rowiki.alphanet.ch logoALPHANETanonmails.de logoAnonmailsascams.com logoAscamswww.blockedservers.com logoBLOCKEDSERVERS
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psbl.org logoSpamikazewww.spamrats.com logoSpamRATSspfbl.net logoSPFBLsuomispam.net logoSuomispamwww.usenix.org.uk logoSystem 5 Hosting
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Taughannock Networks
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Tornevall Networks
senderscore.org logoValiditywww.blocklist.de logowww.blocklist.de Fail2Ban-Reporting Servicezapbl.net logoZapBL2stepback.dk logo2stepback.dkfaynticrbl.org logoFayntic Servicesorbz.gst-group.co.uk logoORB UKdnsbl.technoirc.org logotechnoirc.orgwww.techtheft.info logoTechTheftwww.spamhaus.org logoSpamhaus0spam.org logo0Spam
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Abusix
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Barracuda Networks
www.spamcop.net logoCisco
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Mailspike
www.nosolicitado.org logoNoSolicitado
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SURBL
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UCEPROTECT
uribl.com logoURIBL
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8086 Consultancy
abuse.ro logoabuse.rowiki.alphanet.ch logoALPHANETanonmails.de logoAnonmailsascams.com logoAscamswww.blockedservers.com logoBLOCKEDSERVERS
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Brukalai.lt
dnsbl.calivent.com.pe logoCalivent Networks
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dan.me.uk
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DrMx
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DroneBL
rbl.efnetrbl.org logoEFnet
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Fabel
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GBUdb
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ImproWare
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JIPPG Technologies
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Junk Email Filter
www.justspam.org logoJustSpamwww.kempt.net logoKempt.net
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Mail Baby
www.nordspam.com logoNordSpam
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nsZones
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Polspam
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RedHawk
rv-soft.info logoRV-SOFT Technology
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Schulte
www.scientificspam.net logoScientific Spam
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Spam Eating Monkey
psbl.org logoSpamikazewww.spamrats.com logoSpamRATSspfbl.net logoSPFBLsuomispam.net logoSuomispamwww.usenix.org.uk logoSystem 5 Hosting
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Taughannock Networks
www.team-cymru.com logoTeam Cymru
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Tornevall Networks
senderscore.org logoValiditywww.blocklist.de logowww.blocklist.de Fail2Ban-Reporting Servicezapbl.net logoZapBL2stepback.dk logo2stepback.dkfaynticrbl.org logoFayntic Servicesorbz.gst-group.co.uk logoORB UKdnsbl.technoirc.org logotechnoirc.orgwww.techtheft.info logoTechTheftwww.spamhaus.org logoSpamhaus0spam.org logo0Spam
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Abusix
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Barracuda Networks
www.spamcop.net logoCisco
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Mailspike
www.nosolicitado.org logoNoSolicitado
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SURBL
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UCEPROTECT
uribl.com logoURIBL
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8086 Consultancy
abuse.ro logoabuse.rowiki.alphanet.ch logoALPHANETanonmails.de logoAnonmailsascams.com logoAscamswww.blockedservers.com logoBLOCKEDSERVERS
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Brukalai.lt
dnsbl.calivent.com.pe logoCalivent Networks
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dan.me.uk
Blocklist icon
DrMx
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DroneBL
rbl.efnetrbl.org logoEFnet
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Fabel
Blocklist icon
GBUdb
Blocklist icon
ImproWare
Blocklist icon
JIPPG Technologies
Blocklist icon
Junk Email Filter
www.justspam.org logoJustSpamwww.kempt.net logoKempt.net
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Mail Baby
www.nordspam.com logoNordSpam
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nsZones
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Polspam
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RedHawk
rv-soft.info logoRV-SOFT Technology
Blocklist icon
Schulte
www.scientificspam.net logoScientific Spam
Blocklist icon
Spam Eating Monkey
psbl.org logoSpamikazewww.spamrats.com logoSpamRATSspfbl.net logoSPFBLsuomispam.net logoSuomispamwww.usenix.org.uk logoSystem 5 Hosting
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Taughannock Networks
www.team-cymru.com logoTeam Cymru
Blocklist icon
Tornevall Networks
senderscore.org logoValiditywww.blocklist.de logowww.blocklist.de Fail2Ban-Reporting Servicezapbl.net logoZapBL2stepback.dk logo2stepback.dkfaynticrbl.org logoFayntic Servicesorbz.gst-group.co.uk logoORB UKdnsbl.technoirc.org logotechnoirc.orgwww.techtheft.info logoTechTheftwww.spamhaus.org logoSpamhaus0spam.org logo0Spam
Blocklist icon
Abusix
Blocklist icon
Barracuda Networks
www.spamcop.net logoCisco
Blocklist icon
Mailspike
www.nosolicitado.org logoNoSolicitado
Blocklist icon
SURBL
Blocklist icon
UCEPROTECT
uribl.com logoURIBL
Blocklist icon
8086 Consultancy
abuse.ro logoabuse.rowiki.alphanet.ch logoALPHANETanonmails.de logoAnonmailsascams.com logoAscamswww.blockedservers.com logoBLOCKEDSERVERS
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Brukalai.lt
dnsbl.calivent.com.pe logoCalivent Networks
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dan.me.uk
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DrMx
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DroneBL
rbl.efnetrbl.org logoEFnet
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Fabel
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GBUdb
Blocklist icon
ImproWare
Blocklist icon
JIPPG Technologies
Blocklist icon
Junk Email Filter
www.justspam.org logoJustSpamwww.kempt.net logoKempt.net
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Mail Baby
www.nordspam.com logoNordSpam
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nsZones
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Polspam
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RedHawk
rv-soft.info logoRV-SOFT Technology
Blocklist icon
Schulte
www.scientificspam.net logoScientific Spam
Blocklist icon
Spam Eating Monkey
psbl.org logoSpamikazewww.spamrats.com logoSpamRATSspfbl.net logoSPFBLsuomispam.net logoSuomispamwww.usenix.org.uk logoSystem 5 Hosting
Blocklist icon
Taughannock Networks
www.team-cymru.com logoTeam Cymru
Blocklist icon
Tornevall Networks
senderscore.org logoValiditywww.blocklist.de logowww.blocklist.de Fail2Ban-Reporting Servicezapbl.net logoZapBL2stepback.dk logo2stepback.dkfaynticrbl.org logoFayntic Servicesorbz.gst-group.co.uk logoORB UKdnsbl.technoirc.org logotechnoirc.orgwww.techtheft.info logoTechTheftwww.spamhaus.org logoSpamhaus0spam.org logo0Spam
Blocklist icon
Abusix
Blocklist icon
Barracuda Networks
www.spamcop.net logoCisco
Blocklist icon
Mailspike
www.nosolicitado.org logoNoSolicitado
Blocklist icon
SURBL
Blocklist icon
UCEPROTECT
uribl.com logoURIBL
Blocklist icon
8086 Consultancy
abuse.ro logoabuse.rowiki.alphanet.ch logoALPHANETanonmails.de logoAnonmailsascams.com logoAscamswww.blockedservers.com logoBLOCKEDSERVERS
Blocklist icon
Brukalai.lt
dnsbl.calivent.com.pe logoCalivent Networks
Blocklist icon
dan.me.uk
Blocklist icon
DrMx
Blocklist icon
DroneBL
rbl.efnetrbl.org logoEFnet
Blocklist icon
Fabel
Blocklist icon
GBUdb
Blocklist icon
ImproWare
Blocklist icon
JIPPG Technologies
Blocklist icon
Junk Email Filter
www.justspam.org logoJustSpamwww.kempt.net logoKempt.net
Blocklist icon
Mail Baby
www.nordspam.com logoNordSpam
Blocklist icon
nsZones
Blocklist icon
Polspam
Blocklist icon
RedHawk
rv-soft.info logoRV-SOFT Technology
Blocklist icon
Schulte
www.scientificspam.net logoScientific Spam
Blocklist icon
Spam Eating Monkey
psbl.org logoSpamikazewww.spamrats.com logoSpamRATSspfbl.net logoSPFBLsuomispam.net logoSuomispamwww.usenix.org.uk logoSystem 5 Hosting
Blocklist icon
Taughannock Networks
www.team-cymru.com logoTeam Cymru
Blocklist icon
Tornevall Networks
senderscore.org logoValiditywww.blocklist.de logowww.blocklist.de Fail2Ban-Reporting Servicezapbl.net logoZapBL2stepback.dk logo2stepback.dkfaynticrbl.org logoFayntic Servicesorbz.gst-group.co.uk logoORB UKdnsbl.technoirc.org logotechnoirc.orgwww.techtheft.info logoTechTheft

What is Polspam Wrong Reverse Blacklist (BL)?

The Polspam Wrong Reverse Blacklist (BL), using the zone bl-h5.rbl.polspam.pl, is an IP-based blocklist that lists addresses with incorrect reverse DNS (PTR) records. It is one of several blacklists operated by Polspam, a Polish RBL project dedicated to fighting spam and poor netiquette. This specific blacklist is considered highly restrictive.

The operators of this blocklist advise system administrators to use it with caution, especially lists marked with an "h" in their name. They recommend integrating it with a spam filtering system like SpamAssassin first, rather than using it to reject mail outright. This allows administrators to observe its behavior and adjust scoring before implementing stricter policies. The primary policy is to flag IPs with improper reverse DNS configurations, a common characteristic of servers not configured correctly for sending email, which can include spam sources.

Who runs Polspam Wrong Reverse Blacklist (BL)?

The Polspam project, which operates the Wrong Reverse Blacklist (BL), describes itself as a community-driven, non-commercial hobby. It is a Polish RBL server project that functions based on cooperation with the broader internet community, where volunteers can report spam to a shared database. The organization states that it does not accept donations, is not sponsored, and does not engage in commercial activities. Its sole purpose is to provide information about domains and IPs known for sending spam.

How do I get removed and delisted from Polspam Wrong Reverse Blacklist (BL)?

The delisting process for any Polspam blacklist (or blocklist) is stringent and requires complete honesty. They explicitly state they do not delist notorious spammers and only consider removal for one-off incidents that were not malicious in intent. Lying or omitting information will result in your request being ignored.

Before requesting removal, you must fix the underlying issue. For this specific blacklist, that means correcting your server's reverse DNS (PTR) record. When you contact them, you must follow their guidelines precisely:

  • Use plain text only. Your email must not contain HTML, scripts, or any remotely loaded objects like tracking pixels or logos.
  • Provide essential information. Include the domain name, its IP address, and a detailed, honest description of why you believe you were listed.
  • Be truthful and detailed. You must provide a full confession of any spamming activities, whether intentional or not. This includes details about how you acquired email lists, if you used third-party sending services, or if you knowingly spammed to compete with others.
  • Do not request IP delisting. Polspam lists IPs automatically because of a problematic domain hosted on that IP. They will not delist an IP directly. Once the offending domain's issues are resolved and it stops spamming, the associated IP address will be removed from the blacklist automatically after seven days.

If you are on a shared IP, you must work with your hosting provider. The provider is responsible for identifying which domain on their server is causing the IP to be on a blacklist. The provider needs to check all hosted domains and remove the spamming ones. After the problematic domains are gone, the IP's reputation can recover.

What's the impact of being listed on Polspam Wrong Reverse Blacklist (BL)?

The impact of being listed on the Polspam Wrong Reverse Blacklist (BL) is generally considered low. Polspam itself clarifies that it does not block any mail directly. Instead, it acts as an informational resource, publishing lists of IPs and domains that it has identified as problematic.

The actual impact on your email deliverability depends entirely on which mailbox providers or system administrators use this specific blacklist. Because it is a more specialized, regional (Polish) blocklist and is described as very restrictive, it is less likely to be used for outright blocking by major global providers. However, recipients whose mail servers do use this list may reject your emails or filter them to the spam folder. The main issue stems from having an incorrect server configuration, which is a negative signal for deliverability regardless of this specific listing.

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