Thanks. I checked on the log file. It seems that the RTN script execution was successful. I'm checking on the smtp server settings.
5/6/2014 2:11:01 PM - RTN - Execute: Command Line: 10.251.164.158,RealtimeNotification,5/6/2014 2:10 PM,1088: *Mar 10 19:10:06.788: %SYS-5-CONFIG_I: Configured from console by cisco on vty0 (10.251.161.39)
5/6/2014 2:11:01 PM - RTN - Initialize: RTN started for IP Address: 10.251.164.158
5/6/2014 2:11:01 PM - RTN - ++Initialize RTN Job
5/6/2014 2:11:01 PM - RTN - --Initialize RTN Job
5/6/2014 2:11:01 PM - RTN - JobStarted: RTN Job Started
5/6/2014 2:11:04 PM - RTN - JobFinished: RTN Job Finished
5/6/2014 2:11:06 PM - RTN - TimerProc: Job Complete
5/6/2014 2:11:06 PM - RTN - Dispose