Hi Andrew !! I guess You did not read the whole story :-) It's not about shutting down deliveries. It's not even about compiling vpopmail...
It's a comparison of having a vpopmail SQL configfile vs. compiled in SQL config (vmysql.h) Please read the story, I'm tired... bye... > ---- Original Message ----- > Date: 15-Feb-2003 05:00:47 +0100 > From: Andrew Kohlsmith <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Subject: Re: [vchkpw] switching database servers > > > 5 min * 60 sec/min = 300 sec > > 300 sec / .02 sec/delivery = 15000 deliveries > > Why on earth would you shut down delivery for the compile? > > time to make install: 30 seconds > 30 sec / .02 sec/delivery = 1500 deliveries > > that's one order of magnitude, assuming that you need the full 30 seconds to > do a shutdown/make install/startup. I would believe you could get this down > by another order of magnitude with a simple script -- making your total > deliveries on the order of 150-250. > > Speaking from experience on a mid-volume mail server (about a thousand > deliveries per hour) -- qmail compensates perfectly. In my case I'm also > running every message though spamc and procmail *and* an antivirus scan (Rav > antivirus) -- You get a 1min load spike of about 22-30 which goes away within > a minute and you're back down to normal levels. > > > What about all POP/IMAP connections ? > > Many users gets maybe less than 10 emails a day but they > > do POP their mailbox every 5 (or less) minutes !!! > > You schedule it during a normal maintenance window. Not many people are up > and about at 4am. And also speaking from experience, people will get an > error, go "hmm" and try again. By that time you're back up and nothing > happens. > > And if you really needed to look like you were always up, you'd have already > written a very quick and dirty pop/imap server which just replied "yup, > password good, no messages" to any query. > > Regards, > Andrew > >
