XADM: The Nokia Communicator 9210 Cellular Phone Cannot Connect with IMAP on Exchange 2000

The Nokia Communicator 9210 cellular phone may not be able to connect to an Exchange 2000 server if the server is configured to use secure Internet Message Access Protocol (IMAP) sessions.

This behavior occurs because the Nokia Communicator 9210 first connects to the Exchange server on port 143, and then attempts to negotiate a secure connection to port 993. Exchange 2000 does not negotiate ports; if Exchange 2000 is configured to use secure IMAP sessions, Exchange 2000 uses port 993.

To work around this behavior, make sure that the Exchange 2000 server's IMAP protocol is not configured to use secure sessions if you use a Nokia Communicator 9210 as a client. If you do so, the server listens on port 143 for all IMAP connections and the sessions are not encrypted.

This behavior is by design.

For additional information about the ports that Exchange 2000 Server uses, click the article number below to view the article in the Microsoft Knowledge Base: For additional information about the Nokia Communicator 9210, refer to the following Nokia Web site: Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.

The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.