Users logging on to others' mailboxes?

[penguinroundup]

I need to try and find evidence that some of our users are logging in to other users' mailboxes... I know that in the server event logs, there will sometimes be an entry that goes like "Account X logged on to Account Y mailbox, and is not the primary account on that mailbox"

Can anybody refresh my feeble memory as to where those event logs are stored? I've looked on our mail server, and on our domain controllers, and I can't find any (but I know that this kind of stuff is going on!)

thanks!!

 

[mohamdr]

why you don't go and remove the permission which give others access to other mailbox,this better for privicy.