[exim] exim4 under Debian

Hi,

Forced by a hacker i just completely re-installed our server. (In principal
exim4, MySQL 5 and Apache2). All works fine.

However, I still have some problems configuring exim4 properly.
If you're not into that day-to-day, its very complicated.

Now, my setup is quite simple and common (i think), so there must be
a -sample- config file somewhere i can use.

I have local user on my system.
I have remote users, Using KMail or Evolution, that I want to use Login
or something like that. The remote users all have a local account!

I need for my users to be able to send mail anywhere in the world.

I need to receive mail for my users (local), and only them. No relaying!

A nice to have would be some spam-filtering.

Does anyone have a tip where I can find such a config file. If I use the
standard Debian scripts with dpkg, I allways end up with a non-usable system,
or an completely open system.
I have 7 domains on my server. It's allways connected to the internet.

Any help would be greatly appriciated.

Steven