We have Exchange 2003 server that is working fine. Iphone users and Androids are unable to download attachmetns. No other issues with the server. Some smaller attachmetns might download, but not all the time. We have connected WAP and configured a cell phone to work with the server internally via wireless and its still doing the same thing. So this is not a firewall issue. We have also unistalled antivirus software from the server as well. Any idea what this might be?