Hello I need some configuration tips for Postfix. What I`m locking for is a moderate configuration, witch just filters out the worst. The server has about 3000-4000 e-mail users. Would you recommend using blacklist? Witch rbl/dns sites should I add/are safe to use? I have implemented some rate limits Code: smtpd_error_sleep_time = 1s smtpd_soft_error_limit = 10 smtpd_hard_error_limit = 20 This should be ok? It`s important that these rules don`t make trouble for clients. I`m also thinking of implementing some of these limits Code: smtpd_client_connection_count_limit smtpd_client_connection_rate_limit smtpd_client_message_rate_limit smtpd_client_recipient_rate_limit smtpd_client_new_tls_session_rate_limit smtpd_client_event_limit_exceptions But I need some tips as what to configure here. I do not want to make trouble for my clients, only give them a better service
Take a look at http://www.howtoforge.com/block_spam_at_mta_level_postfix (also check out the comments below the tutorial as some of the blacklists don't work anymore).
