Reporting Config - NI End Host Activity

[#1]

hi,

i have a undestanding problem with my infoblox repoting settings. there is a very large number of syslog where the "host" is the grid master the "soruce" is ib:discovery:end_host_activity and the content of the message is somthing like discoverd data. i think it´s clear that this are logs from the Network Insight appliance but why an how did the came into the reporting appliance? the main problem is that the number of logs is very high so the reporting volume is reached very fast.

has any an idea how to configure this? 

thanks and regards
nils