To create a self-issued certificate by using the CEICW
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Click Start, and then click Server Management. In the console tree, click Internet and E-mail. In the details pane, click Connect to the Internet.
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On the Connection Type page, select Do not change connection type, and then click Next.
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On the Firewall page, select Do not change firewall configuration, and then click Next.
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On the Services Configuration page, ensure that the appropriate network services are selected, and then click Next.
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On the Web Services Configuration page, ensure that the appropriate Web services are selected, and then click Next.
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On the Web Server Certificate page, select Create a new Web server certificate, type the fully qualified domain name (FQDN) of your server (for example: server.contoso.com), and then click Next.
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On the Internet E-mail page, select Do not change Internet e-mail configuration, and then click Next.
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On the Completing the Configure E-mail and Internet Connection Wizard page, click Finish.
Fonte: http://technet.microsoft.com/en-us/library/cc949119(v=ws.10).aspx