http://arav.i2p/stuff/article/setting_up_a_mail_server?lang=ru
Option report_safe I set to 2 to save spam messages as a text/plain attachment instead of modifying original message. trusted_networks sets networks and hosts that are considered trusted, i.e. not spammers. lock_method left to be flock, since I don’t use NFS. required_score left to be its default value of 5.0. I use Bayesian classifier, so options use_bayes and bayes_auto_learn are set to 1. I chose to normalise charset to UTF-8 with option normalize_charset 1 .