Hello Bhawarlal,
1) one while send email notification during PO release strategy using workflow. In this case sender email id shown is
WF-BATCH@default-domain. where in it has to be the one maintained in SU01
Answer : all workflows will be carried out by user WF-BATCH ,in this case ,please check and change the WF-BATCH user address from SU01
2) In second scenario I have scheduled few background jobs. On execution of these jobs I send Email to few recipient. In this case the sender ID shown in Email is SAPUSER@default-domain. wherein it has to be the one maintained in SU01.
Answer: Review the job step from 37 and see the user name who is executing the the job step and review the user email address details.
Regards,
Srini