Amavis
Amavis (A Mail Virus Scanner) is an open-source content filtering framework for email servers, primarily used to scan emails for viruses, spam, and other malicious content. It integrates with mail transfer agents (MTAs) like Postfix or Sendmail to intercept and analyze incoming and outgoing messages, applying various scanning engines and policies to enhance email security. The tool is highly configurable, allowing administrators to define custom rules for handling infected or unwanted emails.
Developers and system administrators should learn Amavis when managing email servers that require robust anti-virus and anti-spam protection, such as in corporate or hosting environments. It is particularly useful for integrating multiple scanning tools (e.g., ClamAV, SpamAssassin) into a unified filtering system, ensuring compliance with security policies and reducing the risk of email-borne threats. Use cases include setting up secure mail gateways, automating quarantine processes, and logging email traffic for auditing purposes.