Hello: I have the following config <logger name="a.b.c.Klass" level="trace" additivity="true"> <appender-ref ref="aSiftAppenderUsingCustomMarker" /> </logger> <logger name="a.b" level="error" additivity="false"> <appender-ref ref="errorAppender" /> </logger> as you can see, I am trying to capture all "error" level messages (and discard lower levels) from child loggers into the "errorAppender", even though child loggers are at trace level, which would log to their own siftAppenders. But all the trace logs still get into error appenders, even though the level is clearly set to "error" Could it be due to the use of marker or siftappender in my log like log.trace(marker,message) but the error logger should still check the level and disregard any marker info. Thanks in advance for your help