An item triggers a notification that has 2 email responses on it: Accept and Reject. When the user logs out of SBM, and then clicks Accept, they get the SBM login screen with the message "Session has expired ", and the item is not transitioned.
.... INFO 26-05-2014 10:50:00 [MailClient] -- Message number 2 was marked for deletion ERROR 26-05-2014 10:50:00 [MailClient] -- Exception deleting messages during close
Notification Server gets a Null Pointer Exception when debug log is turned on in the Configurator Mail Services section - Error: "While job executing java.lang.NullPointerException"