Set X.400 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 X.400 service MTA properties enable you to set default X.400 service attributes, such as RTS values, for X.400 connectors.

To set X.400 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 the X.400 container in the console tree.

   System Manager

   1. Administrative Group or Organization
   2. Servers
   3. Server
   4. Protocols
   5. X.400
3. Right-click X.400, click Properties, and then click the Messaging Defaults tab.
4. 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. Set the checkpoint size to zero if you do not want a checkpoint. Decrease checkpoint size when the link is less reliable.
6. Modify the Recovery timeout (sec) value, which determines the amount of time after a broken connection occurs that the MTA waits for reconnection before deleting the information (with its checkpoints) and restarting the transfer from the beginning.
7. Modify the Window Size value, which is the number of checkpoints that can be 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.