Allow for different NDR when using on premise Exchange with EOP
The current NDR message sent from Office 365 states the mailbox you're trying to reach is hosted by Office 365, even if your only using EOP with on premise Exchange. Our mailboxes aren't hosted by Office 365 and the NDR saying they are creates a problem for us because we have NDA's that prohibit mail from being hosted in the cloud. We're only using EOP as a protection service, not Office 365 mail hosting. A feature that allows for either a custom NDR or one that uses the information from your on premise Exchange server would be a great feature to add.