XCON: Viewing Embedded Message Displays Compose Window

• Microsoft Exchange Server, version 5.5

SYMPTOMS

When you open an embedded message attachment in a message from another Exchange Server computer sent via an X.400 Connector, the message compose window may be displayed. This prevents you from replying to the embedded message.

CAUSE

This problem occurs when the X.400 Connectors between the Exchange Server computers have the "Remote Clients support MAPI" setting disabled on the General tab of the X.400 Connector properties.

When this setting is disabled, the message is converted from the Exchange native format to an X.400 format for message delivery. The MAPI message flags are not properly retained on the embedded message during conversion. This, in turn, causes Exchange to treat the message as a saved unsent message and opens in compose mode.

WORKAROUND

To work around this problem, go to the General tab of the X.400 Connector property page on both Exchange Server computers and select the "Remote Clients support MAPI" check box. Then restart the message transfer agent (MTA) service on both servers.

This is the default setting for the X.400 Connector. The default setting should always be enabled when the X.400 Connector is communicating between Exchange Server computers. Disabling this setting is intended for communication between Exchange and a third-party message transfer agent (MTA).

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server, version 5.5. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.