MRTG / SMTP

[Cole Tuininga]

This isn't exactly what you're asking, but you may want to take a look
at rrdtool.  From their web page:

"If you know MRTG, you can think of RRDtool as a reimplementation of
MRTGs graphing and logging features. Magnitudes faster and more flexible
than you ever thought possible"

You can find the home page at
http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/

-- 
"... one of the main causes of the fall of the Roman Empire was that,
 lacking zero, they had no way to indicate successful termination of
 their C programs."  --  Robert Firth

Cole Tuininga
Lead Developer
Code Energy, Inc
colet at code-energy.com
PGP Key ID: 0x43E5755D