Date: Sat, 24 Nov 2007 11:54:09 -0800 From: "Ted Mittelstaedt" <tedm@toybox.placo.com> To: "Wojciech Puchar" <wojtek@wojtek.tensor.gdynia.pl> Cc: Olivier Nicole <on@cs.ait.ac.th>, freebsd-questions@freebsd.org Subject: RE: What server for a mail server Message-ID: <BMEDLGAENEKCJFGODFOCGEBKCFAA.tedm@toybox.placo.com> In-Reply-To: <20071119162823.O1476@wojtek.tensor.gdynia.pl>
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> -----Original Message----- > From: Wojciech Puchar [mailto:wojtek@wojtek.tensor.gdynia.pl] > Sent: Monday, November 19, 2007 7:38 AM > To: Ted Mittelstaedt > Cc: Olivier Nicole; freebsd-questions@freebsd.org > Subject: RE: What server for a mail server > > > >> > >> I have a project where I should set-up a mail server for approximately > >> 12000 users, 4000 virtual domains, 15000 messages per day, 700 MB > >> traffic per day. > > 200 mails*users/day is safe assumption. maybe 1-2 of them won't be spams > means about 2.5 million mails a day, assume 5 millions because there are > hours of low and high load. > > i would use jail for a virtual domain and users on those - in this jail, > use nullfs to share /usr (and save memory), > sendmail+procmail+spamassassin > works fine. > > it WILL survive this on average modern machine (but with 4 or more disks) > without problems, unless spamassassin turned off. > > if not - it will need possible a few machines. POSSIBLY on one, with 2-4 > cores and lots of RAM, and properly configured spamassassin. > The problem with doing it this way is the all-eggs-in-one-basket issue. When you spread out the load among multiple machines, it is a lot cheaper to purchase machines, at least in the US. And if there is a problem with one of the processes it's usually easier to troubleshoot. The rest of the advice is good - and of course, we could spend days on a hardware discussion. Ted
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