Receiver Mail Adapter Error ( Dynamic mail address to be used)

Hi EveryBody,

I am getting an error in the RWB (Communication Channel Monitoring) as Message processing failed. Cause: com.sap.aii.af.ra.ms.api.RecoverableException: Error: invalid XIMailAdapter channel 'a089879fd0b63a4b92ca72d4a4af2ec4'.Mail is not send to the receiver.I have tried using USE MAIL PACKAGE as base64 and NONE.

Can somebody help me out in the configuration.