You didn't mention a LDA (Local Delivery Agent, could also be refered to as
a MDA. Most likely this is procmail on your linux system.) See the Mail
Administrator HOWTO to figure out how e-mail works. 
( http://www.linuxdoc.org/HOWTO/Mail-Administrator-HOWTO-3.html,
http://www.linuxdoc.org/HOWTO/Mail-Administrator-HOWTO.html )

--
Andy Zbikowski, Sys Admin   | (WEB) http://www.ltiflex.com
LTI Flexible Products, Inc. | (PH)  763-428-9119 (EX) 132
21801 Industrial Blvd       | (FX)  763-428-9126
Rogers, MN  55374           | (PCS) 612-306-6055
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