Hi, we have recently switched from Log4J to Logback. Logging seems to work well except stack traces in SyslogAppender. They are prefixed just like remaining log messages. Is there any way how to disable this prefix and ensure they will be printed in the same manner like with Log4J SyslogAppender? Current behavior: Apr 02 12:31:08 host.name 2012-04-02T12:31:08.418+0200 ajp-bio-8009-exec-7 com.gooddata.exception.servlet.HttpExceptionTranslator ERROR: Processing client_request=/gdcwebapp/gdc/projects/FoodMartDemo/groups/everyone status=FAILED errorCode=gdc.usergroups.default_group_modification errorDescription="Attempt to modify default group (everyone)" exceptionId=abc37cf0-9c56-4e68-a4a7-2111ca823fd4 component=webapp request_id=cAWvICOaKVFF1VvI userId=1 projectId=FoodMartDemo nodeId=nodeOne nodeId=nodeOne, requestId=cAWvICOaKVFF1VvI, userId=1, projectId=FoodMartDemo Apr 02 12:31:08 host.name #011at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) Apr 02 12:31:08 host.name #011at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) Apr 02 12:31:08 host.name #011at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) Apr 02 12:31:08 host.name #011at java.lang.reflect.Method.invoke(Method.java:601) Apr 02 12:31:08 host.name #011at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212) Apr 02 12:31:08 host.name #011at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126) Apr 02 12:31:08 host.name #011at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96) Apr 02 12:31:08 host.name #011at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617) Apr 02 12:31:08 host.name #011at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578) Apr 02 12:31:08 host.name #011at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) Apr 02 12:31:08 host.name #011at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900) Desired behavior: Apr 02 12:31:08 host.name 2012-04-02T12:31:08.418+0200 ajp-bio-8009-exec-7 com.gooddata.exception.servlet.HttpExceptionTranslator ERROR: Processing client_request=/gdcwebapp/gdc/projects/FoodMartDemo/groups/everyone status=FAILED errorCode=gdc.usergroups.default_group_modification errorDescription="Attempt to modify default group (everyone)" exceptionId=abc37cf0-9c56-4e68-a4a7-2111ca823fd4 component=webapp request_id=cAWvICOaKVFF1VvI userId=1 projectId=FoodMartDemo nodeId=nodeOne nodeId=nodeOne, requestId=cAWvICOaKVFF1VvI, userId=1, projectId=FoodMartDemo at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900) Current logback.xml for SyslogAppender: <appender name="SYSLOG" class="ch.qos.logback.classic.net.SyslogAppender"> <facility>local2</facility> <syslogHost>localhost</syslogHost> <suffixPattern>%d{yyyy-MM-dd'T'HH:mm:ss.SSSZ} %t %c %p: %m component=webapp request_id=%X{requestId} userId=%X{userId} projectId=%X{projectId} nodeId=%X{nodeId} %X%n</suffixPattern> </appender> Thanks in advance for any advice. Best regards Jiri Sitina -- View this message in context: http://old.nabble.com/SyslogAppender-stacktrace-logging-prefix-tp33555063p33... Sent from the Logback User mailing list archive at Nabble.com.