The email never arrives, and there is no indication that the report has been run.
You cannot reconfigure the Symantec Endpoint Protection Manager to use a different "From" address.
As of SEP 11.0 Maintenance Release 3 (MR 3), a ".com" suffix has been added to the "From:" address used by the SEPM
([email protected]_name.com) which should help reduce rejections by the mail server.
You must otherwise reconfigure your mail server to accept mail from [email protected]_name or [email protected]_name.com,
where "computer_name" is the computer name of the Symantec Endpoint Protection Manager.