IIS 7.5 passing windows credentials to sql server

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IIS7

ASP.NET

IIS

I have a web application that uses windows authentication to validate users. It also uses a specified user in its application pool. I need to pass the application pool user to the database whenever it makes a connection. It doesn't seem to be passing the proper id to the database to make the connection.

When I check the database server I see the following error every time I hit the webapp.
Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'. Reason: Token-based server access validation failed with an infrastructure error. Check for previous errors

Below is the configuration line in the web config.

<add name="OLTPConnectionString" connectionString="Data Source=myservername.domain.local;Initial Catalog=DevDB;Integrated Security=True;" />
 </connectionStrings>

Regards
Farhan