Resource Load with qmail

[jpablo]

        Hello! I need to know some of your experiences related to
hardware requirements for high traffic qmail/vpopmail instalations.
In a heavy loaded machine, with a lot of maildirs, wich will
be the bottleneck? Disk i/o? CPU? Memory? Network troughput? If
any of you are running high-load qmail servers please tell me the
quantity of maildirs and the hardware used. Thanks in advance.

Juan Pablo