The Abusix Domain Blocklist is a DNS-based blacklist (or blocklist) that contains domains and IP addresses found within the message body of spam, including those discovered by following shortened URLs.
The Abusix Domain Blocklist (dblack.mail.abusix.zone) is a DNS-based blacklist that contains domains and IP addresses found within the body of spam emails. It is designed to be used for both inbound and outbound mail filtering. The data is gathered from Abusix's primary spam traps. This blacklist also follows and lists domains from shortened URLs found in spam messages, targeting both the intermediate and final destination domains.
Technically, this blocklist is intended for use as a URI DNSBL, which means it checks domain names and IP addresses found inside the content of an email. It can also function as an RHSBL, checking domains from various email headers like rDNS, HELO, MAIL FROM, and DKIM. It is important to note that this blocklist should not be used to check the connecting IP address of a mail server.
When a domain or IP is queried against the Abusix Domain Blocklist, it returns specific codes indicating the reason for the listing:
A listing on this blacklist typically expires automatically approximately 5.2 days after the last malicious event was observed.
Abusix, the organization behind the Abusix Domain Blocklist, is a company specializing in network abuse management, email security, and threat intelligence. Their goal is to make the internet a safer place by providing solutions that stop cyber threats before they can reach end-users. They focus on securing email and network traffic, which are the most common vectors for attacks. The blocklist (or blacklist) is one of several services Abusix offers to ISPs, telecommunications companies, and cloud providers to help them combat malicious activity.
Before requesting removal, it is crucial to identify and fix the root cause of the listing. The most common reasons for being added to an Abusix blocklist include:
Once you have resolved the underlying issue, you can request to be delisted. You can begin the process by visiting the Abusix Lookup and Delisting page. You will need to create a free account to submit a delisting request; this is a security measure to prevent abuse of the delisting system. Follow the instructions in the portal to remove your IP or domain. The removal is processed immediately, though it may take up to five minutes for the change to propagate to all networks using the list.
The impact of being listed on the Abusix Domain Blocklist is considered medium. While not as universally adopted as some larger blacklists, it is used by a significant number of Internet Service Providers, telecommunication companies, and hosting providers. If your domain or an IP address in your email content is listed on this blocklist, your emails may be rejected by any recipient whose email provider uses Abusix's security services. You would typically receive a bounce message indicating that your email was rejected by 'Guardian Mail', which is Abusix's email security product.
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