Error:
This computer doesn't belong to a valid Active Directory site. Check the site and subnet definitions.
For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.InvalidADSite.aspx

Error:
Setup can't use the domain controller '' because it belongs to Active Directory site 'Monaco'. Setup must use a domain controller in the same site as this computer (GANYMEDEMC.jupiter.local).
For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.DomainControllerIsOutOfSite.aspx

Error:
This computer requires the Microsoft Unified Communications Managed API 4.0, Core Runtime 64-bit. Please install the software from http://go.microsoft.com/fwlink/?LinkId=260990.
For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.UcmaRedistMsi.aspx

Warning:
Setup didn't detect an existing Mailbox server role installed in Active Directory site ''. Mail can't be sent or received from this mailbox server until a Mailbox server role is installed.
For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.BridgeheadRoleNotPresentInSite.aspx