  We discuss some phenomenological applications of an infrared finite gluon
propagator characterized by a dynamically generated gluon mass. In particular
we compute the effect of the dynamical gluon mass on $pp$ and ${\bar{p}}p$
diffractive scattering. We also show how the data on $\gamma p$ photoproduction
and hadronic $\gamma \gamma$ reactions can be derived from the $pp$ and
$\bar{p}p$ forward scattering amplitudes by assuming vector meson dominance and
the additive quark model.
