Date: Wed, 14 Nov 2007 04:29:56 +0200 From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: Olivier Nicole <on@cs.ait.ac.th> Cc: freebsd-questions@freebsd.org Subject: Re: What server for a mail server Message-ID: <20071114022956.GA2140@kobe.laptop> In-Reply-To: <200711140204.lAE24oTv016136@banyan.cs.ait.ac.th> References: <200711140204.lAE24oTv016136@banyan.cs.ait.ac.th>
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On 2007-11-14 09:04, Olivier Nicole <on@cs.ait.ac.th> wrote: > Hi, > 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. > > The machine should run Postfix, courrier-imap and a web mail (probably > squirel), Apache 2, spamassassin, clamav, greylist > > What type of machine should I target, in terms of CPU and RAM? If you saturate an 100 Mbit/s network interface, it can push/pull more than 800 GB per day, so it's not the network that is going to be the problem :) Depending on the number of *concurrent* connections you want to support, and bearing in mind the post-processing you want to do (filtering with clamav, spamassassin, and serving web pages through the web interface), it may be worth aiming for a machine which has SMP support, and a fair amount of physical memory. I'd go for at least a 3 GHz processor, and 4 GB of physical memory. If amd64 is an option, you can even shoot for 8 GB of RAM or more.
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