[otrs] POP3: no delete

Hi all, Can you tell me if it is possible to fetch mails from POP3 to integrate into OTRS but without deleting it from the server? In fact I tried to comment the ligne 202 in the PostMasterPOP3.pl $PopObject->delete($Messageno); But the ticket are duplicated. That would be really usefull to test otrs, while keeping our current mail system. Thank you for your answers. Best regards, Bastien Leblanc Cellule Administration Peoplesoft Email: ext.cap-gemini.leblanc@sncf.fr