I don't understand why you think untangle is not involved in what is going on. If I turn off untangle all works fine. IF my wife is at work or a coffee shop or where there is wifi the iPad works with exchange if untangle is off. I was using the wireless just to eliminate the edge device I run which is Smoothwall with email server mod. Untangle runs behind Smoothwall right now. I am going to change over to a Cisco router but I need to fix this first. The iPad only has wifi access. The iPhone can be locked to wifi also and it works fine with my email. Hopefully changing configurations with the iPad will resolve this issue.