TechTheft Watchlist Blacklist

Check if you are listed on TechTheft Watchlist Blacklist

And 143 other blocklists.

Check

Check

Spamhaus0Spam

Abusix

Barracuda NetworksCisco

MailspikeNoSolicitado

SURBL

UCEPROTECTURIBL

8086 Consultancyabuse.roALPHANETAnonmailsAscamsBLOCKEDSERVERS

Brukalai.ltCalivent Networks

dan.me.uk

DrMx

DroneBLEFnet

Fabel

GBUdb

ImproWare

JIPPG Technologies

Junk Email FilterJustSpamKempt.net

Mail BabyNordSpam

nsZones

Polspam

RedHawkRV-SOFT Technology

SchulteScientific Spam

Spam Eating MonkeySpamikazeSpamRATSSPFBLSuomispamSystem 5 Hosting

Taughannock NetworksTeam Cymru

Tornevall NetworksValiditywww.blocklist.de Fail2Ban-Reporting ServiceZapBL2stepback.dkFayntic ServicesORB UKtechnoirc.orgTechTheftSpamhaus0Spam

Abusix

Barracuda NetworksCisco

MailspikeNoSolicitado

SURBL

UCEPROTECTURIBL

8086 Consultancyabuse.roALPHANETAnonmailsAscamsBLOCKEDSERVERS

Brukalai.ltCalivent Networks

dan.me.uk

DrMx

DroneBLEFnet

Fabel

GBUdb

ImproWare

JIPPG Technologies

Junk Email FilterJustSpamKempt.net

Mail BabyNordSpam

nsZones

Polspam

RedHawkRV-SOFT Technology

SchulteScientific Spam

Spam Eating MonkeySpamikazeSpamRATSSPFBLSuomispamSystem 5 Hosting

Taughannock NetworksTeam Cymru

Tornevall NetworksValiditywww.blocklist.de Fail2Ban-Reporting ServiceZapBL2stepback.dkFayntic ServicesORB UKtechnoirc.orgTechTheftSpamhaus0Spam

Abusix

Barracuda NetworksCisco

MailspikeNoSolicitado

SURBL

UCEPROTECTURIBL

8086 Consultancyabuse.roALPHANETAnonmailsAscamsBLOCKEDSERVERS

Brukalai.ltCalivent Networks

dan.me.uk

DrMx

DroneBLEFnet

Fabel

GBUdb

ImproWare

JIPPG Technologies

Junk Email FilterJustSpamKempt.net

Mail BabyNordSpam

nsZones

Polspam

RedHawkRV-SOFT Technology

SchulteScientific Spam

Spam Eating MonkeySpamikazeSpamRATSSPFBLSuomispamSystem 5 Hosting

Taughannock NetworksTeam Cymru

Tornevall NetworksValiditywww.blocklist.de Fail2Ban-Reporting ServiceZapBL2stepback.dkFayntic ServicesORB UKtechnoirc.orgTechTheftSpamhaus0Spam

Abusix

Barracuda NetworksCisco

MailspikeNoSolicitado

SURBL

UCEPROTECTURIBL

8086 Consultancyabuse.roALPHANETAnonmailsAscamsBLOCKEDSERVERS

Brukalai.ltCalivent Networks

dan.me.uk

DrMx

DroneBLEFnet

Fabel

GBUdb

ImproWare

JIPPG Technologies

Junk Email FilterJustSpamKempt.net

Mail BabyNordSpam

nsZones

Polspam

RedHawkRV-SOFT Technology

SchulteScientific Spam

Spam Eating MonkeySpamikazeSpamRATSSPFBLSuomispamSystem 5 Hosting

Taughannock NetworksTeam Cymru

Tornevall NetworksValiditywww.blocklist.de Fail2Ban-Reporting ServiceZapBL2stepback.dkFayntic ServicesORB UKtechnoirc.orgTechTheftSpamhaus0Spam

Abusix

Barracuda NetworksCisco

MailspikeNoSolicitado

SURBL

UCEPROTECTURIBL

8086 Consultancyabuse.roALPHANETAnonmailsAscamsBLOCKEDSERVERS

Brukalai.ltCalivent Networks

dan.me.uk

DrMx

DroneBLEFnet

Fabel

GBUdb

ImproWare

JIPPG Technologies

Junk Email FilterJustSpamKempt.net

Mail BabyNordSpam

nsZones

Polspam

RedHawkRV-SOFT Technology

SchulteScientific Spam

Spam Eating MonkeySpamikazeSpamRATSSPFBLSuomispamSystem 5 Hosting

Taughannock NetworksTeam Cymru

Tornevall NetworksValiditywww.blocklist.de Fail2Ban-Reporting ServiceZapBL2stepback.dkFayntic ServicesORB UKtechnoirc.orgTechTheft

The TechTheft Watchlist Blacklist is a semi-manually curated DNS-based blacklist (DNSBL) that lists IP addresses. According to its operators, this blocklist is not intended for blocking email outright. Instead, it is designed for tagging and scoring, where being listed adds points to an email's overall spam score. The maintainers explicitly recommend against using it to block mail due to a high risk of collateral damage.

Listings are based on public nominations and abuse reports referencing a domain name, IP address, or netblock. This blacklist functions as a watchlist, meaning that listed entities are being monitored due to third-party claims of abuse, even without direct local evidence. TechTheft may list a wide range of internet resources that come into contact with its spam and attack traps, including:

• Email sources
• DNS nameservers
• Network IP blocks
• Website hosts
• Email servers
• Virus infected machines
• Web crawling spiders and agents

This blacklist is run by an organization named TechTheft. The group describes its mission as fighting high-technology theft, which includes viral attacks, spam, and DDoS attacks. It was formed as a collaborative point for administrators and hobbyists who felt that earlier anti-spam systems like MAPS and SPEWS were no longer sufficient to combat modern threats. TechTheft advocates for a very strict approach, what they call an "Internet Death Penalty", against sources and supporters of internet abuse to prevent malicious activity at its source.

Removal from the TechTheft Watchlist Blacklist is done by request, but only after you have resolved all underlying issues. Before requesting delisting from this blocklist, you must ensure you have taken the following steps:

• Resolve all complaints: You need to find and resolve all active abuse complaints associated with your IP address. A listing will not be removed until the issues that caused it are fixed.
• Set up an abuse contact: You must have a functioning 'abuse@' email address for your domain and IP space. It is crucial that you monitor this address and act on any complaints you receive quickly.

Once all complaints have been resolved, the listing can be removed. The process is manual and initiated upon request, though a specific delisting form or page is not publicly provided.

The intended impact of being on this blacklist is low. The operators state that it should only be used for scoring or tagging emails, not for blocking them. However, since individual system administrators can use a blacklist however they choose, it is possible some mail servers are configured to reject mail based on this list. This misuse can lead to email delivery failures, which is why the list is noted as having a high risk for collateral damage.

Blocklist guides

19 resources

The difference between a blacklist and a blocklist

Learn the difference between the terms 'blacklist' and 'blocklist' in the context of email deliverability. Understand why the industry is shifting terminology and what it means for your email strategy.

Blocklist guide

What is a DNSBL and how does it affect email deliverability?

Learn what a DNSBL (Domain Name System-based Blackhole List) is, how it works, and why it's a critical factor in your email deliverability. Understand how you can get listed and what to do to resolve it.

Blocklist guide

A guide to RBLs (real-time blackhole lists)

Learn what a Real-time Blackhole List (RBL) is and how it impacts your email deliverability. This guide covers how RBLs work, why your domain or IP might get on a blacklist (or blocklist), and the crucial steps to check your status and request removal. Understand the importance of fixing the root cause to maintain a clean sending reputation.

Blocklist guide

A brief history of email blacklists and blocklists

Explore the fascinating history of email blacklists and blocklists, from their origins as simple text files in the 1990s to their role in today's complex email deliverability landscape. Learn how these spam-fighting tools evolved, the controversies they sparked, and why they remain a critical component for any email sender to monitor and understand.

Blocklist guide

How email blacklists actually work: a simple guide

Learn how email blacklists (or blocklists) actually work, from what they are and why they exist to the common reasons you might end up on one. We'll cover the difference between IP and domain blacklisting, the signals that anti-spam services look for, and how you can check if your domain has been flagged. Ultimately, understanding this system is the key to improving your sending practices and ensuring your emails reach the inbox.

Blocklist guide

Spam traps: what they are and how they work

Spam traps, or honeypots, are a tool used by internet service providers and anti-spam organizations to identify senders with poor email practices. Hitting one can severely damage your sender reputation, leading to your emails being blocked or sent to the spam folder. This guide explains the different types of spam traps, how you might hit one, and most importantly, the proactive steps you can take- like practicing good list hygiene and using double opt-in- to keep your email lists clean and your deliverability high.

Blocklist guide

What are the different types of spam traps and how do they work?

Learn about the different kinds of email spam traps, from pristine honeypots designed to catch spammers to recycled addresses from inactive users. This guide explains what they are, how they can damage your sender reputation and land you on a blacklist, and provides actionable steps for maintaining a clean email list to avoid them.

Blocklist guide

A guide to the different types of email blocklists

Learn about the different types of email blocklists (also known as blacklists) and how they impact your email deliverability. This guide breaks down IP-based, domain-based, public, and private blocklists, explaining how you can get listed and, more importantly, how to stay off them. Understand the crucial role of sender reputation and proactive monitoring to ensure your emails reach the inbox.

Blocklist guide

Public vs private blacklists: what's the difference?

Learn the critical difference between public and private email blocklists. This post breaks down how each type of blacklist works, why you might get listed, and the specific steps you need to take to get removed. Understand that public lists like Spamhaus are transparent, while private lists from providers like Gmail and Microsoft are internal and require a different approach to fix your deliverability.

Blocklist guide

What happens when your domain is on an email blacklist?

Discover the far-reaching impact of being on an email blocklist or blacklist. This article explores how being listed affects your email deliverability, damages your sender reputation, and disrupts business operations. Learn about the immediate consequences, the long-term reputational harm, and the steps required for recovery and prevention to keep your crucial email channels open.

Blocklist guide

A guide to the blacklists yahoo mail uses

Wondering why your emails aren't reaching Yahoo users? Yahoo Mail uses a sophisticated system to filter spam, relying on a combination of well-known public blacklists, like Spamhaus, and its own private, internal blocklist. This guide explains how this hybrid system works, how you can determine if you've been listed, and the steps you need to take to repair your sender reputation and get your emails back into the inbox.

Blocklist guide

What does it mean when your email is blacklisted?

Learn what it means to be on an email blacklist, also known as a blocklist. This guide explains why domains and IPs get blacklisted, how these lists work, and the impact they have on your email deliverability. Discover the steps to check if you're on a blacklist and the process for getting removed to restore your sender reputation.

Blocklist guide

What is an email blacklist and how does it work?

An email blacklist, or blocklist, is a real-time database of IP addresses and domains that are blocked by mail servers due to a history of sending spam. Being listed can severely impact your email deliverability. This guide explains what email blacklists are, how they work, the common reasons for being listed such as high spam complaints or poor list hygiene, and the steps you can take to check your status, request removal, and prevent it from happening again.

Blocklist guide

How your email address ends up on a blacklist

Getting your email address or domain on a blacklist is a common but serious deliverability issue that prevents your messages from reaching the inbox. This typically happens due to specific sending practices, such as high spam complaint rates, poor list hygiene that leads to hitting spam traps, and suspicious sending behavior. This post explains the primary reasons you might get blacklisted and outlines the steps necessary to diagnose the problem, get removed from blocklists, and prevent it from happening again through proactive reputation management.

Blocklist guide

What is email backscatter and how to stop it

Ever received a bounce message for an email you never sent? This phenomenon is called email backscatter, and it occurs when spammers spoof your email address. This guide explains how backscatter happens, the dangers it poses to your sender reputation and its potential to land you on a blacklist. Learn how to protect your domain from this disruptive issue using email authentication like SPF, DKIM, and DMARC.

Blocklist guide

A practical guide to understanding your email domain reputation

Learn what email domain reputation is and why it's more important than ever for your email deliverability. This guide covers the key components of your reputation score, the difference between IP and domain reputation, and practical steps you can take to monitor, protect, and improve this critical marketing asset.

Blocklist guide

Understanding email greylisting and how it works

A deep dive into email greylisting, a common anti-spam technique. This post explains how greylisting works by temporarily delaying unknown emails, discusses its pros and cons, compares it to blacklisting, and offers guidance for senders to ensure their legitimate emails aren't overly impacted by this filtering method.

Blocklist guide

What happens when your domain is put on a blocklist?

Discover what happens when your domain is blocklisted, from immediate email deliverability failures to long-term reputation damage. Learn the common causes, such as high spam complaints and poor list hygiene, and understand the steps to check your status and begin the recovery process.

Blocklist guide

What happens when your IP gets blocklisted?

Discover what happens when your IP address gets blocklisted and how it impacts your email deliverability and web access. This guide explains the common reasons for being blacklisted, from high spam complaints to compromised systems, and outlines the immediate consequences. Learn how to check if your IP is on a blacklist and the essential steps to get it removed and, most importantly, how to prevent it from happening again.

Blocklist guide

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