Hi, our IT guy has had to re-issue me a new password for Ent Server Activation about 4 times now, same problem each time: activation goes to 100% completion and everything is fine for a few hours and often a few weeks, but eventually I am unable to send or reply to any messages, although I still receive them. When I try to send/reply, get this Message Status: "Transaction error-bad format". I use Outlook 2003 set up as POP e-mail with my corporate e-mail info, which runs on an Exchange Server. Carrier is Nextel. Any thoughts?? This is becoming frustrating.