A million per month? Well that's not so heavy! A million an HOUR would be something to worry about. The hardware issues are not huge, however I would suggest 15k RPM SCSI disks in a RAID array. CPU power is not going to drive you here. The best thing is to get a REALLY well set up email server. In the past I have put machines into service using the "Full-Q" QMAIL package from Inter 7 in Chicago. Installations are excellent and support is brilliant.

I have a machine that is handling about 50,000 per hour using a Full-Q installation on a pair of P-3's @ 760MHz with 1gb RAM and 6 36gb 10k RPM SCSI drives. Another machine handles similar volume with a single P4 @ about 2GHz, 1gb RAM and the same drive array. Because of your HTML size you will get reduced throughput, but your targets wont be hard to reach.

jdtoronto


In reply to Re: (OT) Setting up a mail server by jdtoronto
in thread (OT) Setting up a mail server by webchalkboard

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