NBU Appliances 5200 5220 configuring SMTP "From"

i have a 5200 and a 5220, both at 2.5.1 

Setup the SMTP server and the address for both software and hardware notifications, however, everything is being sent

From: NoReply_NBU_Appliance@netbackup 

so it gets caugth by our Spam service because it doesn't have a proper sender domain ..  (true, and appropriate).

I've looked in the configuration GUI and the CLISH and do not see where I specify "From:" addresses.  Am I missing something?