Newsbin has a new feature you can activate from the autopar tab.
"Fail Encrypted Files".
What this does is attempt to fail both files that are encrypted and those that contain large RARs inside the rar set (typically the inside rar is encrypted).
Currently it requires one RAR file to work. I plan on eventually having it work from the first chunk of the file. Like a signature match. In practice, this lets you add multiple sets to the download list and the encrypted/Large RAR sets will end up in the failed list. Any good sets will just download.
This works even with the new spammer technique of not including the first RAR in the set.