CleanMail

CleanMail is a server-based anti-spam solution (Windows, Linux, macOS) that filters inbound and outbound email for spam, viruses, and phishing attempts. It uses a combination of DNSBL checks, Bayesian learning, and text pattern analysis. Administrators can configure multiple quarantine levels, whitelists, and blacklists. A built-in greylisting module helps reduce novel spam. Detailed logs and daily quarantine summaries allow easy management of flagged messages. CleanMail’s flexible licensing suits small to mid-sized businesses looking for an on-prem or private cloud solution that integrates with popular mail servers.