Change load notification Sender email

Hi Team,

We are receiving load notification completion email for PC's from XYZ@A.com.

Now we need to change this mail ID. I couldn't find from where we are getting this mail ID in SU01D.

How to find the user of this mail ID and how to change this mail ID to different sender name?

Please advise.

I already tried checking ADR6 & USR21.

Thanks,

Saravanan.