missing email from user's inbox

She has only one PC and that has been shut down.  Same behavior.

Is it possible to pull the Exchange log for her account you will see every client (IP address) that is accessing her account?

If you view the mailbox properties in System Manager does it show that the user has items?  If you send a new item does the count go up?

In the user's AD account, on the Exchange General tab, click the Delivery Options button and make sure it's not configured to forward the mail to a different user (although you shouldn't even see anything temporarily hit the mailbox if this were the case).

I will bet a pound to a penny that there is another email account configured on another computer somewher (or mobile phone) and that it is pulling the emails down.

One way to test - block port 110 on your firewall and see if the problem stops.

The handheld suppose to pull message from RIM.  RIM gets the messages from our BES server.  

If there was something within the LAN to pull message, blocking 110 from the FW is not going to help.

Kelle1, as mentioned, the message did arrive to her MB but disappeared after 5 seconds.

Okay - so turn off her Blackberry then and see if the problem stops.

I move her MB to another location and the issue is not happening.  Anyone has any idea about this behavior?

Did you turn off her Blackberry before moving the mailbox?

Thanks.