Option 1: Put a tick in Enable routing for failed messages, found on the General tab for Receive Ports and on the Transport Advanced Options for Send Ports. Rather than suspending the message will be routed to the ESB exception portal.
Option 2: If you want the message to suspend so you can retry it, add a new filter to the ALL.Exception Send Port `BTS.AckType == NACK' That rule will then cause notifications for ALL port failures.
If you have a mixture of ports with routing for failed messages and the global NACK rule, then for those ports you will get two failure messages unless you make your NACK rule more specific e.g. BTS.AckType == NACK and BTS.ReceivePortName == nameofreceiveport
or BTS.AckType == NACK and BTS.SPName == nameofsendport