Is there a way to determine the last time a user checked their exchange server (2003)mailbox?

Hi, Open Exchange System Manager -> Admin Group -> Server -> SG -> DB -> Mailboxes. In Right side pane you can see list of all mailboxes, their last logon & log off times. If it does't show then you can addthose columns...

the confusion for me with that is NT AUTHORITY\SYSTEM is shown as the "last logged on by" for numerous users. i imagine from the times listed, that's a part of the backup's running. is there a more definitive way to determine this?

Hi, This behavior does not indicate any issue that is related to system security. More information you can refer to KB816730 "Last Logged on By" value shows NTAUTHORITY\System or a cluster account http://support.microsoft.com/kb/816730/en-us Besides, you can try to use WMI to query LastLogonTime property. Below article show how to use VBscript to retrieve this lastlogon time properties. Managing Exchange 2003 with WMI, Part 1- Exchange Logon Management http://www.microsoft.com/technet/scriptcenter/topics/exchange/ex03_wmi1.mspx#EOE LastLogonTime Property http://msdn.microsoft.com/en-us/library/aa144762.aspx Hope it helps. Xiu