Have you been blocked?
All blocklists are researched and managed by The Spamhaus Project.
Simply click on the link below, which will take you to the Project’s IP and Domain Reputation Checker. From here you will be able to enter your IP or Domain and begin your request for removal.
Please note that the Project’s IP and Domain Reputation Checker is the only place where removals are handled.
IT and security teams consistently face multiple business challenges. Discover how our solutions can help overcome some of those issues.
From processing issues, to email-borne threats our blocklists easily integrate with your current email set-up to improve anti-spam & anti-virus email filtering.
Employ our threat intelligence to increase visibility across security events, reveal potential weaknesses in your network, and threats to your brand.
Stay on top of the latest threats and proactively combat botnet infections, and other forms of abuse, with our solutions.
From clicking on phishing emails to visiting malware dropper sites, our threat intelligence provides automatic protection for your users.
Data for Integration
Enhance your service and create competitive advantage by integrating Spamhaus’ world-class IP and domain reputation data.
Our products provide additional layers of security for networks and email. They also present security teams with additional insight into malicious behavior.
Border Gateway Protocol (BGP) Firewall
Block the worst of the worst at your network edge, taking advantage of your existing BGP-capable routers. Configuration only takes minutes.
Data Query Service (DQS)
Benefit from industry-leading real time blocklists. These DNSBLs easily plug into your existing email infrastructure to block spam and other email threats.
A powerful research tool to investigate relationships between internet infrastructures. Quickly pivot to new areas of concern to rapidly investigate potential threats.
Immediately block connections to dangerous sites, including phishing and malware dropper websites. A ‘set and forget’ solution.
Spamhaus Intelligence API
Threat intelligence data in API format to enable users to easily integrate metadata relating to threats with their own applications, programs, and products.
abuse.ch Real Time Feeds - coming soon
Actionable data signals on cyber threats, with a focus on malware and botnets, to strengthen threat investigations, detections, and help prevent data breaches.
Integration | MDaemon
Block over 99% of email-borne threats with Spamhaus’ real time DNS blocklists and MDaemon® Email Server.
Integration | Halon
Safeguard your email stream using Spamhaus’ real time DNS blocklists and Halon’s secure email infrastructure.
Integration | Messageware
Enhance Microsoft Exchange protection by blocking malicious IP addresses from connecting to your on-premise server in real time.
A wide range of datasets, providing multiple layers of protection. They can be plugged directly into your existing hardware, making them an affordable choice.
Exploits Dataset Statistics
View the geolocation, hosting network, malware names associated with each detection, and other critical data points.
Border Gateway Protocol (BGP) Feeds
Do Not Route Or Peer (DROP) and Botnet Controller List (BCL) datafeeds can peer with your existing BGP-capable router.
Domain (DBL), Zero Reputation (ZRD) and Hash blocklists (HBL) enable you to block content in emails, filtering out a higher rate of email-borne threats.
Data for Investigation
Passive DNS and extended datasets give you additional information on internet resources. They provide deeper insights into incidents and possible threats.
DNS Firewall Threat Feeds
A wide range of feeds to apply to your DNS recursive server. Choose the right level of protection for your organization.
Spam (SBL), Policy (PBL), Exploits (XBL) and Auth (AuthBL) blocklists allow you to filter email from IPs associated with spam, botnets, and other threats.
abuse.ch Threat Intelligence Feeds – coming soon
URLhaus, MalwareBazaar, ThreatFox, YARAify, Feodo Tracker and Sandnet enrich CTI feeds and support vulnerability mangement.
Find out more about us.
Learn more about Spamhaus; who we are, and what we do.
Find a partner
Discover our partners and how they can support you.
Become a partner
Learn about the benefits of being a Spamhaus partner and how to get started.
Discover a wide range of blog posts, case studies and reports.
Spamhaus’ insight into malware, botnet C&Cs, and the domain reputation landscape.
Commonly asked questions about Spamhaus products and processes.
The Blocklist Tester
A tool to help you check if your servers are correctly configured to use Spamhaus DNSBLs.
The Reputation Portal
A tool for ASN owners to get visibility of their IPs’ reputation and proactively manage listings.
Help for the Project's legacy DNSBLs users
Using the Project’s legacy blocklists and suddenly experiencing email issues? This page may be able to help.
In depth information about the technical details and implementation of our products.
Posted by The Spamhaus Team on 16 Aug 2023
We’re delighted to announce our partnership with MDaemon Technologies – a leading email solutions provider for small-medium sized businesses. This integration of Spamhaus’ real time threat intelligence adds an additional layer of security to MDaemon® Email Server to protect users from over 99% of email-borne threats.
Gain control, privacy, and security through MDaemon® Email Server. Having developed email software for over 25 years, MDaemon enables businesses worldwide to easily manage and maintain secure email communication with a trusted email service.
To ensure the highest level of protection, and to stay ahead of emerging email security threats, MDaemon Technologies’ products are continually releasing new features. In the most recent product update of MDaemon® Email Server, Spamhaus’ reputation data service is available to increase email security.
This integration will also be added to SecurityGateway™ for Email Servers product in a release update later this year to provide customers using other mail servers the same layers of protection.
Spamhaus’ real time DNS blocklists (DNSBLs) can now be immediately utilized by enabling the service via MDaemon’s administration console. Consisting of continuously updated IP, Domain & Hash data, the DNSBLs are made available using Spamhaus’ Data Query Service (DQS).
Every day, 13 billion SMTP connections, 3 million domains, and 18 thousand malware samples are analysed to safeguard against malware, phishing, botnets, spam, and more. The result? Efficient, robust, and cost-effective email protection – “This [Hash Blocklist] is a game-changer. It’s the biggest single effectiveness improvement we’ve had in 10+ years “, Manager, Global Cybersecurity Software Provider.
Using MDaemon’s pre-configured Spamhaus settings, users can block more than 99% of spam and other email-borne threats with immediate effect. As soon as a malicious resource is identified, users are protected.
Yet, the real wins are surrounding risk. With the additional layers of protection, the risk of users opening malicious email is significantly minimized – cleaner inboxes, fewer security incidents, and reduced spam complaints.
Take back time to focus on networking tasks and maintain business operations. As shared by Tara Natanson, Manager of ISP Relations, Constant Contact, “There are a lot of blocklists out there but the only one that’s ever been super trustworthy has been Spamhaus.”
Effective security takes a layered approach. With MDaemon’s solution, DQS is checked during the spam filter processing, along with all the other spam filter rules. When a DQS rule matches, points are added to the overall spam score. MDaemon allows 2 thresholds to be configured. The first flags a message as spam, the second rejects the message during the SMTP processing.
The IP address is assessed first at SMTP connect, to get rid of most of the junk messages. When an email is blocked, the sender will immediately receive a notification, ensuring that emails do not lie unread in junk folders for weeks. Anything not blocked can then be filtered by content, which is checked against our domain and hash data.
This staged email filtering process is considered best practice:
Using MDaemon’s integration of Spamhaus’ data, users can add another layer of email filtering, gaining an immediate layer of protection with greater control, without any configuration requirements.
Any MDaemon Email Server customer can take advantage of this new product feature. Set up takes minutes with activation via MDaemon’s Remote Administration settings. To get access to a free 30 trial, sign up here: https://info.spamhaus.com/mdaemon-dqs-trial-sign-up.
MDaemon offers customers unique control and privacy with its Email Server and email security products. Spamhaus provides industry-leading IP and domain threat intelligence data. Together, you gain immediate, trusted, and cost-effective protection.
Needless to say, we are thrilled to be partnered with the MDaemon team. Arron Caruth, VP Product Development at MDaemon Technologies shared:
“We are constantly reviewing complimentary technologies that will enhance the security of our software. We have been working with Spamhaus for years, and the integration of Its Data Query Service will help us continue to give our customers access to leading email security solutions.”
For more information about the integration, see here: https://www.spamhaus.com/product/protect-email-with-spamhaus-and-mdaemon-technologies/. Alternatively, if you’re already using MDaemon Email Server or would like to learn more, you can contact MDaemon directly at https://mdaemon.com/pages/contact-us.
Spamhaus’ Data Query Service (DQS) is an affordable and effective solution to protect your email infrastructure and users.
Using your existing email protection solution, you will be able to block spam and other related threats including malware, ransomware, and phishing emails.
The service has never failed and utilizes the longest established DNSBLs in the industry.
15 February 2022
Whether it’s personal, business, or email, reputation must be earned. Here's a look at why reputation matters when it comes to email and what you need to be doing to improve it.
18 May 2020
It's a well-known fact that filtering emails using IP blocklists (DNSBLs) blocks the vast majority of malicious emails. It's effective and economical, using minimal computational power. So why should you also use domain and hash blocklists for filtering?
IP & Domain Blocklists (DNSBLs) are very effective at filtering malicious emails. However, they do have one big limitation: How do you block an email sent from a compromised account at Gmail, Hotmail or any other large email service provider (ESP)? Hash blocklists are the answer.