Spamhaus Launches Real-time DNS Blocklists for Enhanced Email Security

• •Spamhaus launched two real-time DNSBL services on June 15, 2026.
• •The commercial service offers low false positive rates for larger organizations.
• •The free service enables small-scale users to filter email threats at no cost.

On June 15, 2026, Spamhaus introduced two data query services for real-time DNS Blocklists (DNSBLs) aimed at protecting email infrastructures from spam and malicious threats. The services include a commercial version with low false positive rates and a free version for small-scale users. Key datasets include the Authentication Blocklist (AuthBL), Exploits Blocklist (XBL), and Combined Spam Sources (CSS). These blocklists help identify IPs and domains associated with malicious activities, such as brute-force attacks and spam emissions. The commercial service is designed for larger organizations, while the free service supports smaller users without additional hardware requirements. Both services aim to enhance email security and reduce unwanted email traffic, ultimately saving on processing costs. Spamhaus emphasizes the importance of real-time updates to maintain effective protection against evolving threats.