Can anyone help me with documentation, tutorials or something like this?

I Cant find explanation of this issue.

I've setup MS Exchange(one machine 2 roles: MBX and CAS) and second MS Exchange both in DAG.

3d machine Rootcert CA.

I want to have trusted certificate for ms exchange (1st and 2nd) for all computers in network(for Outlook WebApp, for MS Outlook 2010). 

All computers, servers(EXCHANGE, ROOTCERT .. etc.) in network joined to DC(MYORGANISATION.COM).

Kind Regards

This is really a Windows issue.

Take a look at :

https://technet.microsoft.com/en-us/library/cc731242(v=ws.10).aspx

Deploy Client Computer Certificates

I would ask any further questions in a Windows Server Forum.