MSExchangeTransport 2020

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上一次修改主题： 2011-03-19

本文对特定 Exchange 事件进行了说明并提供了可能的解决方案。如果您在此处未找到所需内容，请尝试在 Exchange 2010 帮助中进行搜索。

Details

Product Name

Exchange

Product Version

14.0

Event ID

2020

Event Source

MSExchangeTransport

Category

SmtpSend

Symbolic Name

SmtpSendUnableToTransmitLongOrar

Message Text

Unable to transmit long ORAR address '%1' to remote server '%2' over send connector '%3'. Message '%4' will not be delivered to recipient '%5'.

Explanation

This event indicates a message delivery failure between the Send connector on a Microsoft Exchange Server 2010 Transport server and another SMTP server. In Exchange Server 2010, the SMTPSend component is the transport component that sends messages from the Delivery Queue to other destinations. This event is triggered when the SmtpSend component cannot transfer a message that includes Originator Requested Alternate Recipient (ORAR) information to an SMTP Receive connector.

Note   ORAR information is transferred during the RCPT TO SMTP command.

This issue may occur if the SMTP Receive connector on the remote server does not support ORAR. To support ORAR, the OrarEnabled parameter must be set to True. By default, this parameter is set to False on Receive connectors. When the parameter is set to True ($true), the Receive connector advertises ORAR support by displaying the XORAR keyword in the EHLO response.

Additionally, if the ORAR information contains a long X.400 e-mail address, the LongAddressEnabled parameter must be set to True on the Receive connector. The X.400 e-mail addresses are encapsulated in SMTP e-mail addresses by using the Internet Mail Connector Encapsulated Address (IMCEA) encapsulation method. If the LongAddressEnabled parameter is False, the maximum length for a complete SMTP e-mail address is 571 characters. When the parameter is set to True, X.400 e-mail addresses may be up to 1,860 characters after IMCEA encapsulation. The Receive connector advertises support for long addresses by using the XLONGADDR keyword in the EHLO response. This parameter may be set only on Receive connectors that are configured on Hub Transport servers.

For more information, see the following topics:

User Action

To troubleshoot this issue, do one or more of the following:

  • 有关相关事件，请查看 Exchange 2010 服务器上的应用程序日志和系统日志。例如，在此事件之前和之后发生的事件可能会提供有关导致出现此错误的根本原因的详细信息。

  • Examine the ORAR address in the event description to determine its length.

  • Remove, and then reinstall any installed Antispam program to determine whether the issue is resolved.

  • Log on to the remote SMTP server by using the telnet command to port 25. Use the EHLO command to return a list of extended SMTP verbs that the server supports. Determine whether the XORAR and/or XLONGADDR keywords are advertised.

  • If the XORAR verb is not advertised, determine whether the OrarEnabledParameter is set to True on the remote SMTP server's Receive connector. To do this, run the following command from the Exchange Management Shell:

    Get-ReceiveConnector "ConnectorName" | Format-List

  • If the ORAR information contains a long X.400 e-mail address, determine whether the LongAddressEnabled parameter is set to True on the remote SMTP server's Receive connector. To do this, run the following command from the Exchange Management Shell:

    Get-ReceiveConnector "ConnectorName" | Format-List

  • Use the Set-ReceiveConnector cmdlet to enable ORAR and long address support on the remote SMTP Receive connector. For more information, see Set-ReceiveConnector.

  • You may want to increase diagnostics logging to log the components in the transport pipeline. To increase diagnostics logging for the Transport components, follow these steps:

    1. In the Exchange Server 2010 Management Console, expand Server Configuration, and then click Hub Transport.

      Note   For an Edge Transport server, click Edge Transport.

    2. In the Actions pane, click Manage Diagnostic Logging Properties for the appropriate server.

    3. Expand MSExchangeTransport.

    4. Click the following components, and then click Expert, then click Configure for each component:

    • Smtpreceive

    • Smtpsend

    • DSN

    • Components

    • Remote Delivery

    • Categorizer

  • 使用自助支持选项、协助支持选项及其他资源来解决您的问题。您可以从 Exchange Server 解决方案中心访问这些资源。在该页中，单击导航窗格中的“自助支持选项”可使用自助服务选项。自助服务选项包括搜索 Microsoft 知识库、在 Exchange Server 论坛上发布问题及其他方法。或者，您可以在导航窗格中单击“协助支持选项”来联系 Microsoft 支持专业人员。由于您的组织可能已有直接与 Microsoft 产品支持服务联系的特定流程，因此，请您务必先查看您组织的准则。

For more information about the transport pipeline in Exchange 2010, see the following topics:

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