I am running an Exchange 2010-installation where some clients are using IMAP to download emails. IMAP is configured to requre TLS from the connecting clients. This is working fine, but: I have one spesific application that do not support TLS in the IMAP-config and my question is: Is it possible to configure IMAP on the Exchange-server without the TLS-requirement for this application only? In other words to configure that IMAP-connections from the server running the application can be done without TLS? All other clients should connect by using TLS as they do now.