This has nothing to do with penalty, you can easily fix this.
Solutions are different from cases to cases, here are what you can do:
1. Contact your host, they will be able to solve this (this is what i do)
2. Add your site to webmastertool (in case you really want to do this), there should be a message there. If not you can contact them directly.
I had this problem with 1 of my PBN, and it turns out my PBN really was hacked, i contacted hostwinds and they fix it in a snap lol.
Anyway, good luck dude.