This is my (relevant) config structure <configuration> <appender name="EMAIL" class="ch.qos.logback.classic.net.SMTPAppender"> ... </appender> <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"> ... </appender> <root level="ERROR"> <appender-ref ref="EMAIL" /> <appender-ref ref="FILE" /> </root> <logger name="com.a" level="INFO" /> <logger name="com.a.b.c.IgnoreMe" level="OFF" additivity="false" /> </configuration> I have an SMTPAppender emailing me all errors generated by my webapp. One specific class is generating false positives so I want to turn them off. This has IgnoreMe not logging errors to "FILE", but errors are still making it to "EMAIL". How do I stop them going to the SMTPAppender too? Note : I have more loggers configured for external libraries set to INFO. I'd like to avoid putting appender references in every logger if possible. Thanks Chris