  We study spin torques induced by Rashba spin-orbit coupling in
two-dimensional ferromagnets under the good-metal condition
$\epsilon_{F}\tau/\hbar\gg1$ ($\epsilon_{F}$ the Fermi energy, $\tau$ the
electron lifetime) by employing the Kubo formula. We find that, in the presence
of spin-dependent disorder the Rashba torque changes greatly as the system
evolves out of the weak disorder limit where $\hbar/\tau$ is much smaller than
any intrinsic energy scale characterizing the multiband structure. The
antidamping-like component of Rashba torque can be comparable to and larger
than the field-like one out of the weak disorder limit. The semiclassical
Boltzmann theory produces the same results as microscopic linear response
calculations only in the weak disorder limit. Our analysis indicates that rich
behaviors of various nonequilibrium phenomena beyond the Boltzmann theory may
also be present even when $\epsilon_{F}\tau/\hbar\gg1$ in multiband systems
where $\epsilon_{F}$ is not the unique intrinsic energy scale.
