Microsoft Exchange Client Access server “%1” attempted to proxy Outlook Web Access traffic to Client Access server “%2”. This failed for user “%3” because this user is a member of too many groups. Outlook Web Access limits the group membership when proxying to “%4”.

Details
Product: Exchange
Event ID: 44
Source: MSExchange OWA
Version: 8.0
Symbolic Name: ProxyErrorTooManySidsInContext
Message: Microsoft Exchange Client Access server “%1” attempted to proxy Outlook Web Access traffic to Client Access server “%2”. This failed for user “%3” because this user is a member of too many groups. Outlook Web Access limits the group membership when proxying to “%4”.
   
Explanation

This Error event indicates that Outlook Web Access could not proxy a request from a computer that is running the Client Access server role to a Client Access server that is located in a different Active Directory directory service site. This occurred because the Outlook Web Access user is a member of too many Active Directory groups.

   
User Action

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

  • Reduce the number of Active Directory groups that the user is a member of.

  • If you have difficulty resolving the issue, contact Microsoft Customer Support. For information about how to contact support, visit Microsoft Help and Support.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.

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