PBS Notification change sender (From) address

PBS 3.2-2

I am trying to set up email notifications. When I go to Notification Targets, and hit Test, I get the test email with a From address like myaddress@company.com.

I then go to my PBS storage and set up my verify job and run it, I receive a warning email from the mail server saying it does not like the from address of root@virt-1backup.myhostname.

How can I modify the from address when PBS sends an email notification?

Thanks.