What server for a mail server

Giorgos Keramidas keramida at ceid.upatras.gr
Tue Nov 13 18:30:54 PST 2007

On 2007-11-14 09:04, Olivier Nicole <on at 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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