Is there a way to find out who created a public folder in Exchange 2010?
I've tried looking in ADSI Edit and
Get-PublicFolderStatistics (which gives created/modified dates and times).
Exchange doesn't track a "Created-By" attribute for Public Folders. I've taken a dive into mfcmapi to see what was there under the hood, but there is no created-by attribute. The closest it gets is as Joeqwerty points out, the default rights it assigns upon creation.
Look at the owner of the PF in Outlook. The person who created the PF is granted the Owner role on the folder.