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SharePoint and Outlook syncing not going through Load Balancer

Posted By:      Posted Date: April 10, 2011    Points: 0   Category :C#


There are many users who connect to document libraries from their Outlook. In our organization usually people sync their MySite document libraries with their Outlook. The synching works fine with no issues. Of late we have discovered that these syncing requests do not go through the load balancer.

We have four web servers and three web applications including MySite. The load balancer was configured to spread requests to all the web servers for all the web applications. The IIS logs always show the load balancer IP as the client IP confirming that all requests are coming through the load balancer.

Due to a recent change in the farm architecture, we have reconfigured the load balancer to route MySite requests to only one web server and the other web applications to the other three web servers. This works fine which we verified from the IIS logs that all users are hitting the web server dedicated to MySites.

But when we see the IIS logs of the three web servers (other than the one for MySite), we see that requests for MySites are still coming to these servers. All these requests are coming from Outlook (confirmed from the cs-useragent in the IIS) and the IP is not of the load balancer but from the user's laptop.

Is there a way to stop these requests from coming to all these web servers directly without going through the load

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