I have noticed that the moderators here tend to supply a lot of information about a question, while avoiding answering the question. It almost seems like moderators search for key words in a question and then copy and paste from their library of information about the keywords, instead of actually answering the question with direct knowledge.

My question is very clearly spelled out in the topic sentence, which I will repeat here:

Can Outlook.com Only Forward Messages From the Junk Folder?

As was the case with so many of the questions I ask here in this curiously-named Microsoft Answers forum, I was left to figure out the answer on my own:

Outlook cannot forward messages from a single folder. It either forwards all messages or none. There is no message filter configuration that allows a user to forward from one folder only.

Therefore, in my situation, while I can send all messages that are not contacts or safe senders to the Junk folder, I cannot forward these messages to my account so they never appear in the Junk folder to begin with.

At the present time, Outlook.com has no provision to forward all messages except for contacts or safe senders. Such a feature would be beneficial for a Child's Microsoft account, so if enough parents ask for it, perhaps this feature will be added in future.