We've just completed a 2007 to 2013 Exchange migration for a client.
Everything has gone quite smoothly, even the migration of Public Folders but we're left with a strange problem.
The users all have access to a public folder which they drag emails in, these are then forwarded to a mailbox using the folder assistant then a 3rd party app collects from the mailbox.
This all worked great on 2007 but on 2013, the forwarding from public folders to the mailbox doesn't work.
I've been reading loads about changing send as and receive as permissions but none of these will work and appear to mostly be related to early 2010 exchange server.
Anyone run into this yet? I suspect that this is something to do with the public folder mailbox not having permission to send messages as the original sender (as the messages which are being dragged are the original messages), but as public folders are now folders inside a mailbox its not clear exactly what needs permission to do what.
Any help greatly appreciated. Thanks