Has anyone had trouble with PPPoE DSL and Exchange causing the Request dialog box to appear. The situation is this, I have a VPN branch office that is having trouble communicating with our exchange 2003 server. They can't seem to reply or open attachments without the Requesting Data box popping up and sometimes hanging. We have tried about everything that we can think off and have even consulted the Microsoft support page for help and can't seem to get it resolved. It seems like it all started when either the ISP switched to PPPoE or we upgraded to Exchange 2003. Any ideas would be appreciated.