The system is trying to work up some magic to set up your account but based on the information provided, it just doesn’t know what to do. You’re going to end up one unhappy customer unless you know exactly how to enter the info correctly. Using my previous account information, here’s the correct way to enter the information so that your iPhone can understand.

iPhone 3G Cases @ MYiPhone.com Online Store

• Email: vincent@iphonebuzz.com should be entered as vincent.webmail.iphonebuzz.com
• Username: DOMAIN\username = IPHONEBUZZ\vincent_iphonebuzz.com
• Password: changeme
• Description: Vincent Exch

As soon as you click NEXT, a second field called Server miraculously appears (see image above). You will NEVER see this field if you INCORRECTLY enter info in the initial four fields. Instead, you will get “Verifying Exchange account information” message with the spinning progress icon and it never connects. Next, enter your Server info. In my case, my server is webmail.iphonebuzz.com. Click SAVE to continue. You should then see the same info in the screenshot below. Click Sync and you’re good to go. Make sure to take NOTE that all data in your Contacts and Calendars will be erased when you first synchronize Exchange.

Editor’s note: keep in mind that this How-to setup Exchange on iPhone 2.0 Beta 3 will not solve all your problems should you run into issues on the server side such as missing certificates. Please seek out your administrator for support.