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
> do a shutdown/make install/startup. I would believe you could get this
> 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
> antivirus) -- You get a 1min load spike of about 22-30 which goes away
> 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
> 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
> And if you really needed to look like you were always up, you'd have
> written a very quick and dirty pop/imap server which just replied "yup,
> password good, no messages" to any query.