This is similar to what Ipswitch says. The problem is that 100,000+ is pretty open ended, so I can only assume that it will handle up to 100k.
Going through our records, I see several customers with 150,000-200,000 E-mails/day, another with 300,000, another with 500,000. One of our customers says he processes 600,000 E-mails/day (on a server with 4 CPUs). There are others with higher numbers, but it's unclear whether or not they are realistic.
... it would be nice for people to know how to size their system so they're not wasting cash on Xeon boxes when they could get by with a PIII.
Yes, that is very important. For <50,000 E-mails/day (the majority of IMail users, as far as I can tell), any server should do (1 500MHz CPU can process that volume, complete with virus and spam scanning). For higher numbers (such as 100,000+ E-mails/day), it does become harder to figure what hardware is necessary. I think a lot of people would be interested in your research.
I hope to document a full range of performance metrics, so as to include hardware performance as it pertains to mail sent/received per day as well as per minute to account for peak usage performance constraints.
Very good. Although E-mails sent/received per day is what people usually talk about, the "burst rate" (per minute or per second) is quite important.
-Scott
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