[Pkg-exim4-users] Help with a deny IP list?

[Aileen Carlstrom]

Reading the documentation leads me to believe that all I *should* have
to do is create a file named local_host_blacklist in the /etc/exim4
folder and populate it with the IPs I wish to be banned.  Done and Done,
and yet when I run update-exim4.conf (not sure I even need to do that,
but it seems like it would not hurt) and restart the daemon, my IP,
which I put in the blacklist file, can still send just fine.  I went so
far as to chmod everything in /etc/exim4 to 777 just to make sure it was
not a permissions problem.  I do not have a whitelist file, but my IP
*is* in the allowed relay_nets.  

If it's relevant, I'm working on a test setup with an eye to adding SA
and AV to my real servers eventually, so I'm running a exim-daemon-heavy
with the split config.   My base system is running the current Ubuntu
Server LTS (8.04).  It says my Exim version is
"MAIN_PACKAGE_VERSION=4.69-5ubuntu2".

Any ideas on why it isn't picking up the values in the local blacklist?
Or is that not the correct way to do a deny IP list?

Thanks,
Aileen C.