how to avoid app logging to syslog

Hi ,

I am trying to setup logging for an app with a new custom conf file under /etc/rsyslog.d
as below & name the file as 30-custom.conf

$template DailyPerHostLogs, "/var/log/rsyslog/<new_folder>/%$YEAR%%$MONTH%%$DAY%-%HOSTNAME%.log app* -?DailyPerHostLogs & stop

I did restarted rsyslog.. after above change. But some how whatever logging is being written to %$YEAR%%$MONTH%%$DAY%-%HOSTNAME%.log file under /var/log/rsyslog/<new_folder>/ is also being written to /var/log/syslog.
Is there a way i can avoid it ..not to write to default /var/log/syslog?

OS: Ubuntu 14.04.5

Thanks,
drams.

My thoughts: look at the man pages how to write "0" outputs to syslog. So far I remember, you can control with conf setups of your app, what will be the content of the logs. How exactly? I dont know: I would have to search again. Hopefully it helps.