Supporting Messaging Clients

Assign an IP Address, TCP Port, and SSL Port

The default virtual server is created with an IP address of (All Unassigned). For instant operation, the IMAP4 server is identified on the network with the IP address of the Exchange computer. This allows the IMAP4 service to receive incoming connections on TCP port 143, and a Secure Sockets Layer (SSL) port of 993 is used. For instant operation, you can use the default IP address, TCP port, and SSL port, or you can assign a different IP address from any available network card. However, if you plan to create multiple IMAP4 virtual servers, you must create a unique combination of IP addresses, TCP ports, and SSL ports for each server.

Important   Even if you leave the default SSL port set to 993, to fully enable SSL on the IMAP4 virtual server you need to request and install a certificate.

To assign an IP address, TCP port, and SSL port:

  1. Start System Manager
    on the Start menu, point to Programs, point to Microsoft Exchange, and then click System Manager.
  2. Navigate to IMAP4.

    System Manager

    1. Administrative Groups
    2. Administrative group
    3. Servers
    4. Server
    5. Protocols
    6. IMAP4
  3. In the console tree, right-click a virtual server, and then click Properties.
  4. On the General tab, in IP address, select either (All Unassigned) or choose a specific IP address from the list of available network cards.
  5. To configure the TCP or SSL Port, click Advanced.
  6. On the Advanced tab, click Add.
  7. Select an IP address and type a Port number.
  8. Type an SSL port number, and then click OK.