I have written a detailed tutorial on how to set up a Debian-based webserver including Apache (+ mod_ssl and PHP), Postfix (SMTP-AUTH + TLS), POP3, BIND9, Proftpd, MySQL, Quota, Webalizer etc. It is a setup that can be used
for many purposes, especially for the hosting of customers' websites.

If you are interested:
http://www.projektfarm.com/en/support/debian_setup/index.html

It's not bad, but it's hardly the best (imho)

Useful for newbies though :)

Winkie, do you have a better tutorial that you are aware of? Please list it if you do ;)

I haven't ever read a proper tutorial, i'd write one if I actually had enough time