Solution : https://service.sap.com/sap/support/notes/872167 (SAP Service marketplace login required)
Key words :
program termination occursuncaught_exception cx_os_object_not_foundin, program cl_cam_address_bcs============cp, 'recipient list' tab, internet mail gateway, business workplace, sapconnect reason, table entry, external sender, triggered exception, received externally
Related Notes :
| 729048 | Dump UNCAUGHT_EXCEPTION when you reply to external mails |
| 455127 | E-mail (SMTP) in different SAP releases |