Date: Tue, 24 Oct 2006 20:00:36 -0600 From: "Rodrigo Ordonez Licona" <rodrigo (at mark) xnet.com.mx> Subject: [coba-e:07710] Re: HELP - excessive dovecot-auth To: <coba-e (at mark) bluequartz.org> Message-Id: <200610250301.k9P314xK022619 (at mark) mail.xnet.com.mx> In-Reply-To: <000b01c6f7cb$e34e5060$6401a8c0@MALAPTOP> X-Mail-Count: 07710We made this changes since qpopper problem and have 700 email accounts on a Centos bq fully yummed, We havent seen the dovecot auth issue, however we had to restart dovecot once but seems to be to spam related (a whole other story spamd with users over quota). We added this to /etc/rc.d/rc.local # tweak for heavy load management ROL 2006 from coba-e (at mark) bluequartz.org echo 100000 > /proc/sys/kernel/threads-max sysctl -w net.ipv4.tcp_max_syn_backlog=2048 ulimit -n 64000 Good Luck Rodrigo O Xnet _____ From: Michael Aronoff [mailto:ma (at mark) ciic.com] Sent: Martes, 24 de Octubre de 2006 06:24 p.m. To: coba-e (at mark) bluequartz.org Subject: [coba-e:07709] Re: HELP - excessive dovecot-auth I have been lurking on this issue for a while and I have a small comment. Has anyone with this problem looked at open file handles? When I had this issue with Qpopper on my Raq 550 changing the files-max on boot helped solve it. It appears that the Cent-OS uses a newer Kernel and even though the system wide number for max files is high, there is a per user limit of 1024 set. There was some discussion of this in http://bluequartz.org/ml/archive/coba-e/4900/4914.html and Michael Stauber said he would let the list know if it helped but I could not find any later post with info about if it worked. Anyway you may what to revisit this aspect as well. If it works please update us back so others can do the same things. Thanks, M Aronoff out7710_2.html (attatchment)(tag is disabled)