Rudy Gevaert wrote: > Some time ago we had some problems with sasl. When to many users are > connecting sasl starts blocking because it hasn't enough entropy. > Recompile sasl so it uses /dev/urandom instead of /dev/random. Hello Rudy, thank you for your tip. I recompiled cyrus-sasl to use /dev/urandom whereafter I restartet cyrus. First it looked like timeouts were gone, because nagios reportet nothing. But then after a few hours the timeouts where back. :( I also tried to raise the prefork number (0->1), but then my users told me that they could not connect to the pop server anymore. Others still could. Also the imapproxy didn't work anymore. I changed prefork back to zero and it was ok again. What I haven't done before was raising the file descriptor limit. I read about the setrlimit -1 thing in the archive and remembered that I should be no problem. Anyway I raised the number from 1024 to 20480. Don't know if that will help but my feeling was that maybe cyrus is waiting somehow / somewhere because it cannot open anymore files and has to close some before. Just guessing ... Any more hints? Timo ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html