Microsoft KB Archive/940613

= It takes a long time for Outlook Web Access clients to receive a response from a front-end server in an Exchange 2003 environment =

Article ID: 940613

Article Last Modified on 11/2/2007

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APPLIES TO


 * Microsoft Exchange Server 2003 Enterprise Edition
 * Microsoft Exchange Server 2003 Standard Edition

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SYMPTOMS
In a Microsoft Exchange Server 2003 environment, users access their mailboxes by using a Microsoft Office Outlook Web Access client through a front-end server. Sometimes, it takes a long time for the Outlook Web Access clients to receive a response from the front-end server.

If you capture the network traffic on the front-end server, you can see the delay between the time that the front-end server receives the back-end server’s response and the time that the front-end server responds to the Outlook Web Access client. This behavior occurs only when the back-end server takes a long time to prepare the response to the front-end server.

For example, typical network traffic may resemble the following: Frame    Time                Source                     Destination             Info 493      14:31:03.83         Client                     FE                      GET /exchange/p087964/?cmd=eassearch 496      14:31:03.83         FE                         BE                      GET /exchange/p087964/?cmd=eassearch 556      14:31:03.88         BE                         FE                      [ACK] 26113    14:31:28.02         BE                         FE                       26187    14:31:28.08         BE                         FE                      HTTP 200 OK 26189    14:31:28.08         FE                         BE                      [ACK] 41601    14:31:44.86         FE                         Client                  

There is an unexpected delay 14:31:28.08 to 14:31:44:86



STATUS
This behavior is by design.

Additional query words: OWA

Keywords: kbtshoot kbexpertiseinter KB940613

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