[logback-user] Multi thread logging for Sift appender

Hi all, I am using logback in a webapplication and logs work fine. However i also have another timer task started on application start up. logs from this timer task are getting displayed correctly on console using ConsoleAppender, however they do not appear in my rolling file sift appender (other logs from my webapplication are logged fine). Can anyone suggest what could be the problem? -- Happy Coding, Sumit