From what I can see it looks like nothing more then paint chipping off and a bit of rust. Without seeing more I would suggest taking a screw driver and see if you can push it in anywhere to check for soft spots
People don't remove outdrives for service and don't care about engine alignment until there is a problem. Therefore never pay attention to motor mounts condition. Next time you do engine alignment you may not be able to turn the nuts there...I have a heavy coat of grease on them rather than paint.