I have some users who would like to share videos they originally posted on tumblr, which does provide an embed code. To the allowed content URL list in the Rich Media section of Content Settings in the admin panel, I have tried adding tumblr.com, embed.tumblr.com, secure.assets.tumblr.com, and even a user's blog (blogName.tumblr.com). However, we still get "resource not allowed" error messages.
Who knows the URL to add for allowing embedding of tumblr videos? Or am I not adding to the correct list?