Johannes, I can't see how that would work at the moment. SiftingAppender keeps it's child appenders, and when a log events comes in it will only log to one of them. I suppose, if you can write a custom appender that gets a reference to the SiftingAppender, then you can do this: class FanOutAppender implements Appender { SiftingAppender sift; void doAppend(E event) { // Fan out log event to all child appenders of sift for (Appender a : sift.getAppenderTracker().valueList()) { a.doAppend(event); ) } } And that will log to all appenders. The trick is using filters so your log event goes to either the sifting appender or your custom FanOutAppender David -- View this message in context: http://logback.10977.n7.nabble.com/How-to-send-one-event-to-more-than-one-ap... Sent from the Users mailing list archive at Nabble.com.