Hi, We are using logback 1.1.2 in our j2ee web application . For each device we want to generate separate log files .We are using siftingappender With file appender .Please find the enclosed logback.xml But a peculiar error is happenging.After writing to its own thread file( say for device 123456 its 123456-2014-05-21T12-51-32.log)..it is failing over to default Discriminator .i.e main and wrting. We have placed <statusListener class="ch.qos.logback.core.status.OnConsoleStatusListener" /> and <configuration debug="true"> but stil getting anu hints of What exactly is going wrong I am also including server startup logs Please provide a solution Thanks, Shirsangshu The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com