Configuring Message Routing

Specify RTS Values

Reliable Transfer Service (RTS) values determine message reliability parameters, such as the checkpoints to include in data and the amount of unacknowledged data that can be sent. The options on the TCP/IP and X.25 X.400 connector Override tab enable you to change the default X.400 service attributes, such as RTS values, when using a specific X.400 connector. Use the Override options to establish communication and manually configure message transfer to a foreign system only when necessary.

Note   Changes to the override values for one connector do not affect message transfer over any other connector. If you do not specify override values, the X.400 service uses the default values when connecting to a remote X.400 system.

To specify RTS values:

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

    System Manager

    1. Administrative Groups
    2. Administrative Group
    3. Routing Groups
    4. Routing Group
    5. Connectors
  3. Right-click a connector, and then click Properties.
  4. Click the Override or MTA Override tab, and then click Additional Values.
  5. Under RTS Values, modify the Checkpoint size (KB) value, which is the amount of data (in kilobytes) transferred before a checkpoint is inserted. If an error occurs and the message must be resent, the process restarts from the most recent checkpoint. Specify zero for no checkpoint. Decrease checkpoint size when the link is less reliable.
  6. Under RTS Values, modify the Recovery timeout (sec) value, which determines the amount of time, after a broken connection occurs, that the message transport agent (MTA) waits for reconnection before deleting the information (with its checkpoints) and restarting the transfer from the beginning.
  7. Under RTS Values, modify the Window Size value, which is the number of checkpoints that can go unacknowledged before data transfer is suspended. Specify window size only if the checkpoint size is greater than zero.

Tip   To restore Exchange default values, click Reset Default Value.