On 25 Jul 2016, at 18:26, Vince42 <dove...@mx24.net> wrote: > > Hi, > > [Steffen Kaiser] - [2016-07-25 08:23] >>> I am running a dovecot server and have set up an external monitoring, >>> where every five minutes a login with SSL on port 993 is done. I usually >>> get once a day an error "connection reset by peer - SSL connect", which >>> goes away until the next monitor is executed. > >> that looks like a basic networking issue to me. >> Do you have logs how many users try to connect at this time? Is it >> always the same time range? Is the server load very high? > > My server has nice specs (in fact a 30 times lower scaled server never > had this kind of problems), I also don't host many domains and users, > therefore I doubt that some kind of limit might be touched. I also > suspected some internal system load, but unfortunately the error occurs > arbitrarily, which makes me think that no scheduled process is > responsible for this. I also ran 'top' during such an event without any > obvious load tasks. The system statistics also show no weird peaks. I > read about the "running out of random" phenomenon, but during such an > event there were still enough resources random-wise. > > Could it be that I need to offer more login processes or that I should > raise some of my configuration values?
If you are reaching any such limits, a warning is logged. Do you see any errors or warnings at all in logs?
