domain requirements on installing Microsoft Dynamics Axapta

Consider the following domain requirements when installing Microsoft Dynamics AX
Computers running Microsoft Dynamics AX components must belong to an Active Directory®
domain, with Active Directory configured in native mode.
Computers running Microsoft Dynamics AX components must have access to other computers in
the same Active Directory domain.
To support e-mail alerts in Microsoft Dynamics AX, an SMTP (Simple Mail Transfer Protocol) server
must be present in the environment.