Trying to delete an entry from Public Folders

[hypetektips]

Ok here is the issue, I was trying out the public folders our new Exchange server, In Outlook i posted a message under Public Folders > All Public Folders > Internet Newsgroups and now I want to delete that post, when I delete it tells me the item either was moved or deleted, or access was denied.

Can anyone help me? is this an issue with permissions? Thank you very much.