We have a system wide revert DN defined under the Messaging/Messaging Management Special DNs. If i go into a regular mailbox and blank out the revert dn field, it defaults to the system revert dn. the only way i can seem to disable revert is to: make a new fully restricted RPL. make a new mailbox class and assign that RPL to the revert dn of the class. When the caller presses 0 the system tries to transfer and says it cant. it seems that there would be a better way do this.