Originally Posted by blackberry1
There is no IT policy to block messages.
There is a policy setting in 4.1 (not sure about earlier versions) 'Enable Wireless Message Reconciliation' which you can disable.
From what I'm reading, if you have reconciliation enabled on your server, all users on that server will have reconciliation enabled by default, unless explicitly configured not to (i.e. setting above policy setting to 'disabled').
There is also another policy setting 'Disable MDS Runtime Environment' which should disable all data services on the devices.
Not sure if this is what you are looking for.