Consider the following scenario:
In this scenario, if an email message is received from an external sender, the message is not forwarded.
- You migrate from Microsoft Exchange Server 2010 to Exchange Server 2013.
- You have a forwarding rule that was created by the Folder Assistant for a public folder.
- The forwarding rule uses the "Leave message intact" method.
In this scenario, if an email message is received from an external sender, the message is not forwarded.