Offline approval processing fail - mail sent to internal recipient

Dear SAP gurus,

We are in SRM 7.01 with backend ECC 6.05 deploying classic scenario. We are using offline approval and has maintained exit /SAPSRM/CL_OFFLINEAPP_INBOUND in SO50 (as per direction in http://wiki.sdn.sap.com/wiki/display/SRM/Offline+approval+-+general+configuration). We are using program /SAPSRM/OFFLINEAPPROVALSEND to send email to the approvers. And they suppose to click accept/reject link and send reply back.

The emails managed to go to SOIN in our SRM, and then we see in the workflow trace it is being processed by the exit. However there are some that it seems failed to be processed by the exit, thus forwarded to internal recipient (which is the user id using the same email address maintained in SO50). We figure that this meant that the email is now in the user id's inbox. The problem is that the inbox belong to user id WF-BATCH which is user type "System", where we cannot logon to it.

So what do we need to do if we have cases like this? Do we need to run /SAPSRM/OFFLINEAPPROVALGET ? I have doubt as it is pointed out in http://wiki.sdn.sap.com/wiki/display/SRM/Offline+approval+-+general+configuration that:

• Note: From SRM 7.0 on, if you use Synchronous processing you should not use at the same time the Asynchronous processing (schedule a background job) because this can cause inconsistencies .

Please enlight me on this issue.

Best regards,

John