I believe that this is an Exchange question. I have an Outlook 2000 client running on Win2K that cannot receive any e-mail from another outlook 2000 client running on WinME. I have reinstalled both outlook 2000 clients, and still have the same problem. I have also tried installing both client profiles on two different boxes with the same results. Both of these mail boxes are setup the same on my exchange 5.5 server. My Exchange Server is 5.5 SP4 running on Windows NT 4.0 SP6a. I am at a lose as what to do next.