Solution : https://service.sap.com/sap/support/notes/194926 (SAP Service marketplace login required)
Key words : 
6a      scot        utilities ->trace->internal tracefrom, 5b     scot        goto -> traceas, cases incoming status messages, additional key words trace, menu 'list ->download trace', incoming/outgoing messages, 1             scoa        administration ii4, internet mail gateway, caseof outbound traces, sapconnect trace
Related Notes : 
       
| 1455934 | Notification emails not sent for CUP requests | 
| 495942 | Sending problems in application SEM-SRM | 
| 40024 | Transferring customer files to sapserv# using ftp |