As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.
As of Alfresco version 2.2, each module can have its own log4j.properties file, which is placed in the same directory as module.properties. The collection of log4j.properties files within all modules installed into the alfresco.war act collectively to augment/override the Alfresco webapp's global WEB-INF/classes/log4j.properties file.