Thank you for the answer genman.
In the meanwhile I found another approach. During the initializtaion of the
'local' log4j configuration I check for appender references that doesn't exist
within the 'local' log4j file (i.e. which aren't specified by an appender tag).
For each such (non existing
I doubt there is an out-of-the-box solution.
One (convoluted) way to make this work would be to have this deployed on the
main server:
http://docs.jboss.org/jbossas/javadoc/4.0.2/org/jboss/logging/Log4jSocketServer.java.html
And then configure your per-application appender as a SocketAppender.
