I struggle a little bit with understanding about crossfederation to mastodon. I am able to find lemmypostings from lemmy.world or feddit.de on my mastodonaccount on my mastodoninstance (fedifriends.social)

But if I want to search for postings from my own lemmyinstance (lemmy.fedifriends.social) I get no results

I search on mastodon for my community (@softintro@lemmy.fedifriends.social) or a specific post (https://lemmy.fedifriends.social/post/46983) and get 0 results on mastodon. Postings from other instances work fine.

I can search for my mastodonaccount on my lemmy (@morethanevil@fedifriends.social) and get the right profil, but a URLs to a post from mastodon are not found either.

What am I doing wrong? I use the latest stable BE0.18.5