  The modified scalar boson propagator due to the presence of a hyperplane
semi-transparent mirror is computed. From this, the classical interaction
between static charges and the mirror is investigated employing delta-like
potentials and sources. Although the calculations for hyperplane mirrors are
performed in arbitrary dimensions, and in a completely general way, it is shown
that the results give rise to the usual image method as a particular case. The
interaction between a point-like mirror and a point-like source is also
considered in $3+1$ dimensions, where a central $1/R^{2}$ attractive potential
is also obtained as a special case.
