I have multiple Exchange 2016 mailboxes that are set to forward and "Deliver message to both forwarding address and mailbox" is NOT checked.
Forwarding is working, but the mailboxes themselves still receive the emails being forwarded.
Update:
My question is, why does Exchange also deliver forwarded emails to the original recipients mailbox if the "Deliver message to both forwarding address and mailbox" is NOT checked? Also, how do I fix this?