Unusual Activity -Logon Time on Host - reset

Unusual Activity -Logon Time on Host - reset

I have Ad Audit Plus that audit my Domain Controllers activity.
I install new domain controller server and give a name like an old server that i remove years ago.
The new server is use for ActiveSync so he has activity all time.
Sinc I install it I get the Unusual Activity every hour and it doesn't stop.
how could I reset the activity time of this server so it will learn it from scratch?

Unusual Activity -Logon Time on Host : View Alerts

Logon activity was done on dcXX.XXXX.XX.XX within 6-7 AM which deviates from host's normal Logon activity hours:11 PM-6 AM. Anomaly category:Unusual Activity -Logon Time on Host




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