Exchange Server Build Numbers and Release Dates

To confirm your exchange server build number, please follow the instructions below

Get-ExchangeServer | fl name,edition,admindisplayversion

(note that the command will give you version of Exchange and service pack installed. It won't give you rollup version
You can run this command to view rollup version on each server
gcm exsetup | fl

IF you have Logparser, you can also use this command:
LogParser "SELECT Name,Size, FileVersion,ProductVersion,InternalName,ProductName FROM '\\servername1\c$\Program Files\Microsoft\Exchange Server\V14\Bin\ExSetup.exe','\\servername2\c$\Program Files\Microsoft\Exchange Server\V14\Bin\ExSetup.exe'" -recurse:0 -i:FS -o:NAT -rtp:-1