XCON: Explanation of the Fields on the Override Tab of the X.400 Connector (234157)


The information in this article applies to:

  • Microsoft Exchange Server 4.0
  • Microsoft Exchange Server 5.0
This article was previously published under Q234157

SUMMARY

To change the default Microsoft Exchange Server Message Transfer Agent (MTA) attributes using a specific X.400 Connector, use the Override tab of the X.400 Connector Properties page. Override options should be used only when necessary to establish communication with a foreign system.

For example, you can configure an override MTA name or password to be used when connecting to a foreign system if the local MTA name or password are longer than the foreign system can accept. This does not affect message transfer over any other connector.

You also use this property page to configure message transfer to a particular foreign system manually. This does not affect message transfer over any other connector.

If you do not specify an override value, the MTA uses the default values when connecting to a foreign system.

MORE INFORMATION

  • Local MTA Name: The name to be used when the Microsoft Exchange Server name is too long or contains characters that the foreign system MTA cannot accept.
  • Local MTA Password: The local password that the foreign X.400 MTA uses to connect to the Microsoft Exchange Server computer.

    NOTE: The Local MTA Name and Local MTA Password can be used to override what is specified in the MTA General property page under the Servers container.
  • RTS Values: Use RTS values to modify values for checkpoint size, recovery timeout, and window size. If you do not specify an override value, the MTA uses the default values or negotiates a configuration automatically when connecting to a foreign system.
    • Checkpoint Size (K): Sets the amount of data to be transferred before a checkpoint is inserted. If an error occurs and the message must be re transferred, the process restarts from the most recent checkpoint.

      If you specify zero, no checkpoint is set. The default is 30.

      Using a checkpoint slightly reduces transmission speed. You should decrease the checkpoint size when the connection is less reliable.
    • Recovery Timeout (sec): Determines the amount of time after an error occurs that the MTA waits for a reconnection before deleting checkpointed information and restarting the transfer from the beginning. The default is 60.
    • Window Size: The number of checkpoints that can go unacknowledged before data transfer is suspended. The greater the window size, the greater the transfer rate. The window size determines the amount of resources set aside for the receiving station. Specify window size only if the checkpoint size is greater than zero. The default is 5.
  • Connection Retry Values: Use the Override tab on the X.400 Connector Properties page to specify how many times the MTA should try to establish a connection. If you do not specify an override value, the MTA uses the default values or negotiates a configuration automatically when connecting to a foreign system.
    • Max Open Retries: The maximum number of times that the system tries to open a connection before it sends a non-delivery report (NDR). The default is 144.
    • Max Transfer Retries: The maximum number of times that the system tries to transfer a message across an open connection. The default is 2.
    • Open Interval (sec): The amount of time to wait before attempting to reopen a connection after an error. The default is 600.
    • Transfer Interval (sec): The amount of time to wait before resending a message across an open connection after a previous attempt failed. The default is 120.
  • Association Parameters: Use the Override tab on the X.400 Connector Properties page to set or modify the association parameters between MTAs. If you do not specify an override value, the MTA uses the default values or negotiates a configuration automatically when connecting to a foreign system.
    • Lifetime (sec): The amount of time to keep an association open to a remote system after a message is sent. The default is 300.
    • Disconnect (sec): The amount of time to wait before terminating a connection because of a previously terminated association. The default is 120.
    • Threshold (msgs): The maximum number of queued messages to a remote system. When this is exceeded, the MTA opens another association. The default is 50.

      The threshold value is used to avoid messages being submitted to the Exchange Server MTA queue faster than they are dispatched. When the threshold value is exceeded, the MTA opens another association to the remote system MTA.
  • Transfer Timeouts: Use the Override tab on the X.400 Connector Properties page to set the number of times the MTA tries to transfer urgent, normal, or non-urgent messages. If you do not specify an override value, the MTA uses the default values or negotiates a configuration automatically when connecting to a foreign system.
    • Urgent: The amount of time (in sec/K) to wait before sending an NDR for an urgent message. The default is 1,000.
    • Normal: The amount of time (in sec/K) to wait before sending an NDR for a normal message. The default is 2,000.
    • Non-urgent: The amount of time (in sec/K) to wait before sending an NDR for a non-urgent message. The default is 3,000.
NOTE: These definitions are taken from the Online Help (F1) on the Override tab and are also available by clicking Help on the Override tab.
Modification Type:MinorLast Reviewed:4/28/2005
Keywords:kbinfo KB234157
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