|Message:||The Microsoft Exchange Client Access server “%1” attempted to proxy or redirect Outlook Web Access traffic for mailbox “%2”. This failed because one of the service discovery entries returned for the Client Access server to use for this mailbox is malformed. The service discovery URLs should be in the format “http[s]://hostname[:port]/owa”. The malformed entry is stored as “%3”.|
This Error event indicates that Microsoft Office Outlook Web Access did not proxy or redirect requests from a computer that is running the Client Access server role to a Client Access server that is located in a different Active Directory site. A symptom of this failure is that the user referenced in the event description could not log on to their mailbox using Outlook Web Access through the Client Access server in a different site. This event may occur when the service discovery process returns a malformed URL address of the remote Client Access server.
To resolve this error, make sure that the msExchInternalHostName (Internal URL) and msExchExternalHostName (External URL) attributes of Outlook Web Access virtual directory of the remote Client Access server are formatted correctly.
You correct these values by using a tool such as Active Directory Service Interfaces (ADSI) Edit, the LDP (ldp.exe) tool, or any other Lightweight Directory Access Protocol (LDAP) version 3 client.
Your URLs should be in the following formats:
To correct an internal or external URL:
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.