machine learning spam filtering

A hands-on guide for Linux email admins to add privacy-first, on-box AI: boost spam filtering with Rspamd, auto-label and route mail via a tiny scikit-learn classifier, get extractive daily digests, and search by meaning. Everything runs locally with Bash-friendly Python, systemd, and Postfix/Dovecot/Maildir, includes apt/dnf/zypper installs, stays CPU-friendly, and is easy to test and roll back.