I just recently switched Hosted Exchange providers. People using Outlook that try to email me get error messages. I've been able to tell the ones that use Outlook 2010 to click on the X next to my email address is the drop down on autofill when sending a new message. Then they type in my email address and then it works fine. Although, if there are users that use the same Exchange provider, even though I've edited their NK2 file (they have Outlook 2007) and deleted my email out of it, it still tries to send to my old box in the old provider which has been deleted. I guess I'm not so worried about that problem as I am the rest. Is there any trick to have people that send email using the autofill not need to go through this, especially with Outlook 2007? Any other suggestions? Thanks!