We are in the process of uninstalling the McAFee Groupshield from three exchange server.
But before doing that we just want to to understand the impact. We are planning to uninstall it from Add/remove programs from the server.
If you mean what will be removed - maybe you could check out this article
How to manually remove GroupShield 7.x for Microsoft Exchange (KB51894)
If this is not what you mean can you clarify??