> There is obviously a point where the server won't be capable of > handling the load, always. But what are the odds with "just" a > brute-force on passwords/accounts? > Our outbound/internal mail gateway handles the traffic for +2K > every-day users +28K occasional users. Millions emails per month. It > handles also emails sent by applications. One of these app had a > problem last October and tried to send +2M emails per day, for many > days: the app authenticated on the mail server (sasl/dovecot) tried to > send the mail, got bounced because recipient was non-valid, got > disconnected, re-connected and tried again with next recipient, etc. > Nobody noticed, no user complained, no performance impact at all. We > only find out because of the postfix log volume increase. > It's a virtual machine with 4 vcpu and 10GB RAM (most ram is used by > antispam), it can handle way more: it runs postfix multi, does > antispam/av filtering and dkim singing for outbound, handles mailing > lists peaks of +60K messages, etc.
Dear patpro, Wow amazing story! Your email volume/traffic is a thousand times bigger than mine! Thanks ^^^ Sincerely, Linux fan Byung-Hee -- ^고맙습니다 _布德天下_ 감사합니다_^))//
