Article ID: 928812
Article Last Modified on 5/10/2007
APPLIES TO
- Microsoft Exchange Server 2007 Enterprise Edition
- Microsoft Exchange Server 2007 Standard Edition
INTRODUCTION
This article describes a property that you can use to increase the default time-out value for the Cross-Forest Availability service in Microsoft Exchange Server 2007.
MORE INFORMATION
The Cross-Forest Availability service has a time limit when the service performs an AutoDiscover operation for cross-forest users in the Active Directory directory service. By default, this time-out value is 10 seconds. If the AutoDiscover request does not finish in 10 seconds, the whole Availability Service request for the cross-forest user may time out.
Note An AutoDiscover request may not finish in the time-out period if one or more of the following conditions are true:
- The URL for the user is not cached.
- The AutoDiscover service is running slowly.
- The AutoDiscover service experiences network latencies.
You can use the RecipientResolutionTimeoutInSeconds property to control the time-out value. This RecipientResolutionTimeoutInSeconds property is set in the ASP.NET Web.config file. By default, this property has a value of 10 seconds. To modify the time-out value for the Cross-Forest Availability service, set the value for this property to between 20 seconds and 24 seconds. To do this, follow these steps:
- Locate the Web.config file in the following directory:
drive:
\Program Files\Microsoft\Exchange Server\ClientAccess\exchweb\ews - Back up the existing Web.config file, and then rename the Web.config file to Web.config.bak1.
- Open the Web.config file in Notepad.
Add the following section directly under the <Configuration> node.
<appSettings> <add key=”RecipientResolutionTimeoutInSeconds” value=”24”/> </appSettings>
Note If you add this section under any other node of Web.config file, the section will not work.
- Save the Web.config file.
- Locate the Web.config file in the following directory:
drive:
\Program Files\Microsoft\Exchange Server\ClientAccess\Owa - Back up the existing Web.config file, and then rename the Web.config file to Web.config.bak1.
- Open the Web.config file in Notepad.
Add the following section directly under the <Configuration> node.
<appSettings> <add key=”RecipientResolutionTimeoutInSeconds” value=”24”/> </appSettings>
Note If you add this section under any other node of Web.config file, the section will not work.
- Save the Web.config file.
Note We recommend that you do not set this property to a value of more than 25 seconds.
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