Junk email addresses search

Hello, we have a couple of problems with Junk email addresses.
We need to be able to search within the lists to make sure certain emails are not blacklisted, as we are a team and there are few people that mark emails as junk.
Also I need some advice to best practice regarding junk email.
How do we edit rules that are not local rules, why do we have so many black lists and spam filters. Will try to add image somehow to show what I mean.