Sonarr downloading .exe

Ahoi! Lately my Sonarr has been downloading .exe files from Lime and EZTV a lot. Someone deliberately pushes them just befor an episode airs and Sonarr happily grabs them. They don't exexute, but still mess up my auto downloads.

Is there a way to prevent Sonarr from downloading them all together? Or at the very least re-download a proper release after noticing the exe file?

I also have private trackers as backup, but prefer public where I can contribute more by seeding to 1:100+ ratios.