We are rolling out Exchange 2010 in our environment. Upgrading from Exchange 2007. One of the features I am not too happy about is the ability to send instant messages from OWA and Outlook in 2010. I need to disable this feature before I start moving users over to 2010. I cannot have users pulling down text messages from their phones when they connect with ActiveSync. Most users will freak out if this happens and I cannot believe this feature is enabled by default. I am working in a test environment right now and I am trying to figure out a way to disable this feature. Someone said using the Segmentation tab under the OWA virtual server properties would work but it does not. I disabled Test Messaging and Instant Messaging but I was still able to pull down text messages in my Outlook from my mobile device. There has to be a way to disable this feature on the server.