Solution : https://service.sap.com/sap/support/notes/1057472 (SAP Service marketplace login required)
Key words : 
system change option underadminstration virsa namespace objects, describe table objbin lines w_lin, reclist-receiver = /virsa/zffcntrl-zvirffcontroler, /virsa/zffcntrl-zvirffusageinfo eq 'email', virsa namespace exists pleasecheck, bname =                  /virsa/zffcntrl-zvirffcontroler, reclist-receiver = adr6-smtp_addr, sending log mails start, log report attachment, superuser privilege management
Related Notes : 
       
| 1548036 | Definition of options in controller's table | 
| 1430336 | Firefighter log report is not being sent to controllers | 
| 1065048 | Firefighter Log Not sent in Email to Controller |