We have IBM Websphere Application Server installed on Red hat linux and we have several applications running on it. So the problem is, that one of the application which was deployed on the websphere instance has a feature of sending mail to the student who ever completes a course. So what happened is that there was a OS reboot last week and after server reboot the send mail thing won't work. A program called Flux sends a mail with an attachment which it is supposed to send along with the mail. But now it is not sending the attachment along the mail. So what i think is there is some process which gets stopped when the REd hat Linux is rebooted which has to be started manually. I do not see any Error message in the log files. so any body has any clue about this issue please let me know. Any idea aboout the mail Server ? or SMTP server ? I am not that good at Linux . Please let me know.