We average about 40,000 emails a day and the Barracuda causes about a 1-2 second delay. Not sure about the actual throughput.
And for anyone out there that is a big proponent of open source, the Barracuda is essentially a Linux box with about a dozen or so software packages that, of course, are also tweaked by Barracuda.
Anyways, there start at under $1,499 I think and is a hell of a product. 15 minute setup and basically forget it's there after that.
I went to a seminar on Barracuda just yesterday and am considering purchasing their web filter and/or messaging archiver as well.
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