Enabling posts to be accessible for non-logged in users

Hi there, I’ve noticed some instances seem to have enabled their toots to be visible to search engines and users who are not logged in. Seems like with the default config, users have to be logged in to view a post.

How can we enable toots to be visible to non-logged-in users? Or am I confused about defaults, is this already enabled?

Here’s an example from a toot on another instance:

I’m not sure what you mean—all public toots are visible to non-logged-in-users, unless you’ve customized mastodon