Consider the following scenario:
Note The expected behavior is that the NDR message only contains the recipients for whom the delivery fails.
- You configure a Microsoft Exchange Server 2010 Hub Transport server to route Internet messages through a third-party smart host.
- A user sends an email message to multiple external recipients.
- Delivery to one or more recipients succeeds and delivery to one or more recipients fails. For example, the delivery to nonexistent external recipients fails.
Note The expected behavior is that the NDR message only contains the recipients for whom the delivery fails.