To show that I'm not too far off from the views of mainstream Christianity here's GotQuestions take on outer darkness which they believe to be "eternal darkness":
http://www.gotquestions.org/outer-darkness.html
Here's another one with much more thorough scholarship from bible.org. They contend that those who go to outer darkness are not saved and make a great effort to explain both sides.
https://bible.org/article/%E2%80%9Co...suburb-or-hell