Hi everybody, One of my users is using outlook express to pop up mail from Exchange 2000, what happen is outlook Express remove or delete all messages that they older than 3 days and I have no idea where they are going and as far as I know that Outlook Express doesn't have Auto Achieving and when I start office it pop up with a messages says couldn't find C:\temp\detail file and I checked all other machines, non of them have this file. Any idea or suggestion!!! Thank you all for your help Ezzeldin