Email Server

I don't have any specific suggestions except for these: (1) Don't get a "bargain basement" box - get a well-known, reliable, name-brand box - like Dell, HP, IBM, etc., and make sure its NT (or Win2K if your upgrading that as well) certified; and (2) your current hardware configuration looks fine for running Exchange 5.5 except for the memory. This depends somewhat on the size of your Exchange site (how many mailboxes, DB size, etc.), but you should undoubtedly have at least 256MB of RAM if notmore. If the server is doing nothing but Exchange, that should be adequate. If it's doing other things, and/or if you're running Outlook Web Access, you should probably go with at least 512, depending on number of users perhaps more. Hope this helps!

Have to agree with Synergy. Buy a good box with plenty of room to spare. A good RAID system is always a worthwhile investment on an Exchange server.
The amount of memory is really more important than the processor. While 256mb will suffice, if you have a virus scanner running, you may need more. Some of them are real resource hogs.

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