Java EE (Java Enterprise Edition) General Discussion

Hello everybody,

I have program that retrieves new mails form the mailbox on the Exchange Server (IMAP4).
Program worked perfectly with the old version (5.5) but the other day company installed new version (2003) of Exchange Server.
I changed the IP address in my program and expected it to work as good as with the old server but it doesn't work. Username and password are the same as in the old server.
It gives me:
java.net.ConnectException: Connection refused: connect
When I try to connect that mailbox from Outlook it works fine. It means that mail server works fine.
I tried to find answer in the Java documentation but nothing helped me so far.

Does anybody have any suggestions?