Why do I get messages internally?

Hi folks. Thank-you all for your help so far. Our pilot of OTRS is going
very well. One bug left.
We keep getting emails in OTRS like this:
From: OTRS System

in preferences you can change turn those notifications off
N.
Tuesday, August 10, 2004, 2:00:30 PM, you wrote:
VRP> Hi folks. Thank-you all for your help so far. Our pilot of OTRS is going
VRP> very well. One bug left.
VRP> We keep getting emails in OTRS like this:
VRP> From: OTRS System
participants (2)
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N.R.
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Varsani, Rajendrakumar (PSD)