Hi Due to a product we are using it will not work with Exchange 2007 CAS redirecting Exchange 2003 users traffic to the Exchange 2003 back end servers. Is there any way to get the Exchange 2003 users redirected by the CAS server to the Exchange 2003 front end servers? Thanks

In short I would have to say no. 2003 Front-end servers are the first ones you upgrade in any 2007 migration. Maybe the article below will shed some more light on it all http://msexchangeteam.com/archive/2007/02/07/434523.aspx

Ok thanks I will use another method to do this thanks