If you open de Exchange Management Shell and you run the following powershell command:
Get-ExchangeServer | fl name,edition,admindisplayversion you get the Build Number from your Exchange 2007 Servers
Exchange Server 2010
|
Product name |
Build number |
|
Microsoft Exchange Server 2010 RTM |
14.0.639.21 |
|
Update Rollup 1 for Exchange Server 2010 |
14.0.682.1 |
|
Update Rollup 2 for Exchange Server 2010 |
14.0.689.0 |
|
Update Rollup 3 for Exchange Server 2010 |
14.0.694.0 |
|
Update Rollup 4 for Exchange Server 2010 |
14.0.702.1 |
Exchange Server 2010 SP1
|
Product name |
Build number |
|
Microsoft Exchange Server 2010 SP1 |
14.1.218.15 |