Hi All, In Exchange 5.5 if u click under the server name \ information store \ mailbox resources\ and see on the right hand pane window , u see a column called Windows NT Account. I know it shows that account information of the normal users with the domain name\ user name... My concern is that in my case sometimes for some normal user mail boxes it shows me "domain name\ service account" instead of showing their user account Any idea why it happens or why it sometimes takes that service account user id instead of their NT user id . I am sure that those users are not at all in any of the admin groups. Thanks. Sudhir Kaushal Network Engineer ( Hosted Team ) eGain Communications Pvt. Ltd. ( Nasdaq - EGAN ) Hello - (+91 20) 4222812, (+91 20) 4228607, Ext - 132.