I have done settings to send survey to customers by mailto option according to the tutorial posted by Mr Gregor Wolf in the below link
Now i have maintained the mail id mentioned in the Parameter XML in SO50 tcode with the Exit Class as CL_SVY_SMTP_INBOUND.
I downloaded the presentation format by giving the following options
Send Options : mailto
Send File : The Parameter XML File in which i have maintained the mail id
Media Type : Screen
After downloading i am opening it in explorer and filling my survey value and sending it through outlook.
I have checked the receipient mail id too and the same is receiving the POSTDATA.ATT file but the same is not getting processed and Evaluation is not getting updated.
Kindly help regarding the same. Is there any other configuration for Inbound processing of data which i need to configure.