Suped

ORB UK Open Relay Block Zone (ORBZ) Manual check

Blocklist retired

ORB UK Open Relay Block Zone (ORBZ) Manual has been retired and can no longer be queried. Please use our Blocklist checker below if you wish to check yourself against active blocklists.

The ORB UK Open Relay Block Zone (ORBZ) Manual is a manually generated blocklist (or blacklist) containing IP addresses that have been identified as open SMTP relays, which can be used to distribute unsolicited email.

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Check your domain or IP against 144 blocklists.
www.spamhaus.org logoSpamhaus0spam.org logo0Spam
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Abusix
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SURBL
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UCEPROTECT
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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
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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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www.justspam.org logoJustSpamwww.kempt.net logoKempt.net
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Mail Baby
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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
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
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ImproWare
Blocklist icon
JIPPG Technologies
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Junk Email Filter
www.justspam.org logoJustSpamwww.kempt.net logoKempt.net
Blocklist icon
Mail Baby
www.nordspam.com logoNordSpam
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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
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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
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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
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DrMx
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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 logoTechTheftwww.spamhaus.org logoSpamhaus0spam.org logo0Spam
Blocklist icon
Abusix
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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
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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 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 ORB UK Open Relay Block Zone (ORBZ) Manual?

The ORB UK Open Relay Block Zone (ORBZ) Manual is a manually generated blacklist that lists IP addresses of servers believed to be open SMTP relays. An open relay is a mail server that is configured to accept and forward email from any user, anywhere, which makes it a prime target for spammers to exploit.

The policy of this blocklist is to publicize the existence of these open servers to highlight a potential cause for the high volume of unsolicited commercial email (UCE). ORB UK does not directly block any email. Instead, they operate as a trusted third party. System administrators who use this blacklist query the ORB UK database to check if an incoming email's source IP is listed. Based on the simple "yes" or "no" response, the administrator's own system decides whether to accept or reject the email. This makes it a DNS-based blocklist (DNSBL).

Many system operators trust this blacklist because open relay lists have historically been an effective tool against spam. They believe any open server can be used for malicious purposes and choose not to accept mail from them.

Who runs ORB UK Open Relay Block Zone (ORBZ) Manual?

ORB UK is the organization that publishes the Open Relay Block Zone (ORBZ) manual blacklist. ORBZ refers to the list itself, which was originally created by Alan Brown. ORB UK maintains and publishes this list, asserting their right to do so as fair comment in the public interest. They state that the purpose is to publicize servers that are, or are likely to be, used for sending spam. The organization also acknowledges contributions from other individuals in developing and maintaining the backend software for the service.

How do I get removed and delisted from ORB UK Open Relay Block Zone (ORBZ) Manual?

If you are the postmaster or system administrator for a server on this blocklist, you can request removal. However, before you do, you must ensure your server is no longer an open relay. Threatening the organization will not lead to delisting.

  • Secure your server. The fastest and only way to get off this blacklist is to close the open relay on your mail server. This is a critical first step.
  • Request delisting. Once you have secured your server, email the ORB UK team at removal@orbz.gst-group.co.uk to request the removal.
  • Await testing. ORB UK will test your server to verify it is no longer an open relay. This process typically takes up to 24 hours. If the test confirms your server is closed, you will be removed from the list. If it is still open, you will remain listed.

Be aware that if your server is found to be an open relay again in the future, it will be immediately relisted on the blacklist.

What's the impact of being listed on ORB UK Open Relay Block Zone (ORBZ) Manual?

The impact of being listed on the ORB UK Open Relay Block Zone (ORBZ) Manual is considered low. This suggests that this specific blocklist is not as widely used by major email providers and corporations as other more prominent blacklists. However, a low impact rating does not mean there is no impact. Any mail server administrator who chooses to use this blacklist will reject mail from your IP address, which can lead to deliverability problems with those specific recipients. It is always best practice to secure your server and request removal from any blacklist (or blocklist) you appear on.

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