Not so obvious, keep what you are
comfortable with and simply put something in front to shelter it from these
kind of attacks. Go free with ASSP on the same or a spare computer and get
great anti spam protection too, or go free with IMGate on a spare computer, or
any other smtp gateway solution. Granted you will still be susceptible
from attacks that originate inside your firewall, but then, who
isn't.
Doug Traylor
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