Wow, thanks for the great tutorial on setting up the "hairy beast".
I was able to learn enough to get sendmail up and running on my Lunix machine from this article. Up until now I've been using the great but expensive CommuniGate server from stalker.com on all my systems because I could never bother to learn sendmail (much less try and set it up).
Now I feel comfortable enough to use and set it up!
P.S. Folks, do yourselves a favor and go and get webmin from webmin.com. It really helped me to setup sendmail and some other stuff. Totally free too!