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

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

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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����������������������<RESPONSE DATA>
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������������������<RESPONSE DATA>

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

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Status

This behavior is by design.

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Keywords: KB940613, kbexpertiseinter, kbtshoot

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Article Info
Article ID : 940613
Revision : 1
Created on : 11/2/2007
Published on : 11/2/2007
Exists online : False
Views : 183