I am trying to migrate email from an in-house Microsoft Exchange 2003 server to gmail. I found the gmail instructions for migrating mail here:
But first I have a few basic questions. Is IMAP not generally used? The exchange management shows that IMAP is not enabled. I tried right-clicking on it and clicking on Start but it timed out without starting. Also, do I need to open port 143 and "forward" the port to Exchange Server? If so, how do I do that?