This question might be asked already, but it's different from this one.

My boss has Outlook 2003, when he synchronize his emails while connecting through the local server (using Exchange I guess) he gets his emails normally.

Once he is outside (not connection to our LAN) he gets each email duplicated 3 or 4 times.

Does anyone experienced this before? and how can we fix this?

Please no links to FAQ pages. For info, we are using Kaspersky anti virus and Windows 2003 server, with windows XP clients.

[Update]

Actually we have a bunch of 5 or 6 email accounts on Outlook, and only one of them recieve duplicated copies of the same email, all the others are cool. Further more all these email are using the sae service, Gmail for example.

[Update 2]

I just found out that Outlook is configured to remove emails from the server already, also, some emails exceeds 5 copies!

Thank you