> 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
