> # apt-get -s remove exim4-daemon-light
> Reading package lists... Done
> Building dependency tree
> Reading state information... Done
> The following packages will be REMOVED:
> at bsd-mailx exim4 exim4-daemon-light gutenprint lsb lsb-core lsb-cxx
> lsb-desktop lsb-graphics mailx
Which of those do you need?
Report a bug against them.
Stefan