I don't know if its the source of your duplication, but you don't need to be specifying the STDOUT appender in the logger name="
dk.eazyit.eazyregnskab". My configs typically have root level="INFO" but to get a specific logger to put its DEBUG messages there i just specify the logger I want to, what is it, elevate it level
<logger name="htc.cs.service.device.webapp.TracerIDFilter" level="debug" />
<root level="info">
<appender-ref ref="STDOUT" />
<appender-ref ref="DAILY_ROLLING" />
<appender-ref ref="SYSLOG" />
</root>
This makes all loggers log at INFO to my 3 x appenders, but the TracerIDFilter thing logs to those appenders at DEBUG