Hello All Here is an interesting logback issue. I have logback used in my already existing project. These logback configuration files are externalized to tomcat server. The project consists of multiple web modules and each of these have respective logbacks like logback-PROJ1.xml, logback.PROJ2.xml etc and these are working completely fine. As per logback specification, logback configuration file should be defined as logback.xml or logback-test.xml. It is surprising that logs are generated on above defined custom naming conventions. I did check all the logback.Configuration set up etc but there are no values indeed. Please help me how can this work. Is there any other way that this code is working correctly. I am trying to implement a new module on this project and now its not working for me. I am using tomcat6.0