I must be missing something. I have a server running SBS 2011 which comes with exchange server 2010. I look up the current software level by looking at the properties of the server object in the exchange management console and it show me that we are at version 14.3 build 123.4. I can see where there are three service packs for exchange server 2010, SP1, SP2 and SP3. It looks like these patches want to reinstall exchange server completely. Do I need to do SP1 then the other two to follow or can I install SP3 and skip the first two? It sure looks like it is a fresh install which makes me a little nervous.