How to turn off Receipts for YBAA_M07DR

Hi Experts, We are running program YBAA_M07DR to save a smartform and sending it as a PDF.

However the business are receiving read receipts.This is despite having Confirmation of Receipt in SCOT being turned off.

An example of what is being received (i.e. what we want to stop being sent):

"Delivered: SAPLSTXBE /20120313/184121".Relayed messages for test@companyname.com with the subject "Relayed: SAPLSTXBE /20120313/184121".Subject "Relayed: 6000906" and "Relayed: 6000862"

Can anyone help?

Regards,

Mike