[exim] RPM .spec file for Exim?

Folks,

Does anyone have a basic RPM .spec file for Exim they'd care to share,
please? Not "covers every possibility, for packaging across multiple
OSes with every library optional" but just "this works for me and is
simple enough to change readily".

Thanks,
-Phil

PS: anyone think there should be a contrib/ directory as part of the
    Exim tarball?  :)