We have two exchange 2007 servers, one old and one new. The old one has no mailboxes on it, the new one has all user mailboxes. I'm trying to use a third party program that takes phone messages and file attaches them to email, sent via our internal exchange server. When I telnet to the old exchange server, i get several responses, however, when sending to the new server i get a blank screen, and any character entries immediately put me back at a C:\ prompt. What would be causing this? What can i do to troubleshoot this problem? Obviously once the new mail server responds to telnet, the 3rd party app will be able to work. Thanks!