I recently installed a hotfix for our Exchange server, now I can't RDC to it from my computer. If I remote into our DC I can then connect to the Exchange server. Both my computer and the DC are on the same subnet so that shouldn't be an issue... any thoughts?

Hello, Is Windows 2003 SP2 installed on Exchange 2003 server? If so then disable the chimney feature of Scalable Networking Pack. Exchange has some network issues if it is enabled & this RDP is one of it. Reference: Windows 2003 Scalable Networking pack and its possible effects on Exchange