hERE http://technet.microsoft.com/en-us/library/cc772058%28WS.10%29.aspx
It is said
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Open IIS Manager and navigate to the level you want to manage. For information about opening IIS Manager, see Open IIS Manager (IIS 7). For information about navigating to locations in the UI, see Navigation in IIS Manager (IIS 7). #
In Features View, double-click SMTP E-mail.
In Features View I see list of features with SMTP Server, but it's just plaintext, no way to double click on it to configure anything ?