good alternative to adsense CPM?

I own a forum with decent traffic that I want to monetize with CPM banners. One problem, it is about importing fake stuff, and Google does not like that. So which display network does not have problems with this? Any ideas?

Answers on the forums were not helping :/

Just search the forum. This question has been answered 100s times.

yes but it is outdated

what is the best cpm network for europe?