get source IP of zabbix_sender sent data

[Quarco]

I have data inserted into zabbix of wich i want to know which host/IP it came from. It is a trapper and data is inserted every hour.
Tried to I adjust the debug level to 5 for couple of minutes, but this doesn't show the source addresses either.

Can somebody help me? I have spent hours and hours, but i'm stuck :-/

Thanks in advance!