MSExchange Control Panel 28

  • Article

 

This article provides an explanation and possible resolutions for a specific Exchange event. If you don't find what you’re looking for here, try searching Exchange 2010 Help.

Details

Product Name

Exchange

Product Version

14.0

Event ID

28

Category

Proxy

Symbolic Name

ProxyErrorForbidden

Message Text

Current User: '%1'%nClient Access server "%2" tried to proxy Web management traffic to Client Access server "%3". This failed because one of the following configuration problems was encountered:%n%n1. "%3" has been set to use "http://" (not using SSL) instead of "https://" (using SSL). You can modify this by setting the InternalUrl parameter of the Web management virtual directory that this proxy traffic is going to. You can set that parameter using the Set-EcpVirtualDirectory cmdlet in the Exchange Management Shell.%n2. The destination virtual directory returned an HTTP 403 error code. This usually means it's not configured to accept SSL access. You can change this configuration by using Internet Services Manager on the Client Access server "%3".%n%nIf you don't want this proxy connection to use SSL, set the registry key "AllowProxyingWithoutSSL" on this Client Access server and set the InternalUrl and SSL settings for the Web management virtual directory that this proxy traffic is going to accordingly.

Explanation

This Error event occurs if an invalid scheme exists in the Exchange Control Panel proxy URL. This event indicates that one of the following situations occurred:

  • The address that is specified in the URI (uniform resource identifier) field does not start with either http:// or https://.

  • The scheme does not match what is specified in the implementation of the transport binding element.

User Action

To resolve this event, do one or more of the following:

  • Review the details in the event description for information that can help you understand and resolve the event.

  • Review the Application log and System log on your Exchange 2010 servers for related events. For example, events that occur immediately before and after this event may provide more information about the root cause of this error.

  • Resolve your issue by using self-support options, assisted support options, and other resources. You can access these resources from the Exchange Server Solutions Center. From this page, click Self-Support Options in the navigation pane to use self-help options. Self-help options include searching the Microsoft Knowledge Base, posting a question at the Exchange Server forums, and other methods. Alternatively, in the navigation pane, you can click Assisted Support Options to contact a Microsoft support professional. Because your organization may have a specific procedure for directly contacting Microsoft Product Support Services, be sure to review your organization's guidelines first.

For More Information

If you are not already doing so, consider running the Exchange tools, which have been created to help you analyze and troubleshoot your Exchange environment. These tools can help make sure that your configuration aligns with Microsoft best practices. They can also help you identify and resolve performance issues and improve mail flow. To run these tools, go to the Toolbox node of the Exchange Management Console. To learn more about these tools, see Managing Tools in the Toolbox.