Exchange2010 on Windows2012 - my way

Install-WindowsFeature RSAT-ADDS, AS-HTTP-Activation, Desktop-Experience, NET-HTTP-Activation, NET-Framework-45-Features, RPC-over-HTTP-proxy, RSAT-Clustering, RSAT-Clustering-CmdInterface, RSAT-Clustering-Mgmt, RSAT-Clustering-PowerShell, Web-Mgmt-Console, WAS-Process-Model, Web-Asp-Net45, Web-Basic-Auth, Web-Client-Auth, Web-Digest-Auth, Web-Dir-Browsing, Web-Dyn-Compression, Web-Http-Errors, Web-Http-Logging, Web-Http-Redirect, Web-Http-Tracing, Web-ISAPI-Ext, Web-ISAPI-Filter, Web-Lgcy-Mgmt-Console, Web-Metabase, Web-Mgmt-Console, Web-Mgmt-Service, Web-Net-Ext45, Web-Request-Monitor, Web-Server, Web-Stat-Compression, Web-Static-Content, Web-Windows-Auth, Web-WMI, Windows-Identity-Foundation

reboot 

install
http://www.microsoft.com/en-us/download/details.aspx?id=17062
http://www.microsoft.com/en-gb/download/details.aspx?id=26604
http://www.microsoft.com/en-us/download/details.aspx?id=34992

merge this into registry:

--- CUT HERE ---
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WINEVT\Publishers\{770ca594-b467-4811-b355-28f5e5706987}\ChannelReferences]
"Count"=dword:00000002

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WINEVT\Publishers\{770ca594-b467-4811-b355-28f5e5706987}\ChannelReferences\0]
@="Add Microsoft-Windows-ApplicationResourceManagementSystem/Diagnostic"
"Id"=dword:00000010
"Flags"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WINEVT\Publishers\{770ca594-b467-4811-b355-28f5e5706987}\ChannelReferences\1]
@="Add Microsoft-Windows-ApplicationResourceManagementSystem/Operational"
"Id"=dword:00000011
"Flags"=dword:00000000

--- CUT HERE ---


cdrom:\setup.exe /preparead

when runing setup DO NOT check "Automatically install Windows Server roles and features required for Exchange Server"

DO NOT REBOOT!
DO NOT START Exchange Management Console yet!

Install Exch2010 SP3

reboot

You may find that on Server2012 you can launch the Exchange Management Console, but are unable to expand any of the objects in the left hand pane.
Exchange 2010 Exchange Management Console was built with CLR (Common Language Runtime) version 2.0. Windows 2012/8 by default runs its MMC snap ins with CLR version 4.0.
to fix it, start cmd and type:

set __COMPAT_LAYER=RUNASINVOKER
set COMPLUS_Version=v2.0.50727
"C:\Program Files\Microsoft\Exchange Server\V14\Bin\Exchange Management Console.msc"


Now you can do the usual stuff.

BTW: Don't be an idiot (like me), don\t install Eset RA Server before installing Exchange, that will put the Exchage RA web console on ports :80 and :443 and IIS will never start. 
netstat -a -b -n -p tcp is your friend in this case, run it and you will see who occupies your ports.