I'm not familiar with NLog, but it looks like syslog target is not used (single logger in rules, with writeTo=fileTarget).
Also you need to configure syslog target (according to https://github.com/graffen/NLog.Targets.Syslog):
Also you need to configure syslog target (according to https://github.com/graffen/NLog.Targets.Syslog):
Code Select
<targets>
<target name="syslog" type="Syslog" syslogserver="127.0.0.1" port="514" facility="Local7" sender="MyProgram" layout="[CustomPrefix] ${machinename} ${message}" />
</targets>