  Resonant proximity effect in the normal metal / insulator / diffusive
ferromagnet / insulator / $s$- and d-wave superconductor (N/I/DF/I/S) junctions
is studied for various regimes by solving the Usadel equation with the
generalized boundary conditions. It is shown that the resonant proximity effect
originating from the exchange field in DF layer strongly modifies the tunneling
conductance and density of states.
