How to Use Client Certificate Authentication
Client certificate authentication encrypts all communications that flow in and out of your Exchange server. It essentially protects all your mailboxes from potential spammers and/or hackers who may try to steal your company's sensitive information like financial data and databases. You can process certificate authentication (CA) with a tool called "Internet Information Services (IIS) Manager." It is a Web server application that offers administrative functions for your Exchange server. Note that this tool is only accessible for administrators or users with administrative rights. The instructions below apply to the Windows Server 2008 and Windows Server 2003 operating systems.
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Instructions
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Click the Start menu and open the "Administrative Tools" folder. Click to open "Internet Information Services (IIS) Manager." You will need a computer running on Windows Server (2003 or 2008 version) to access this tool.
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Double-click to expand the "Web Sites" node in the left pane. Click the node labeled "Default Web Site."
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Right-click the node labeled "Default Web Site" and select "Properties" from the context menu.
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Click the tab labeled "Directory Security."
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Click the "Server Certificate" button.
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Click the "Next" button when you see the welcome screen.
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Select the option "Create a new certificate."
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Click "Next."
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Select the option "Prepare the request now, but send it later." This should be the only option available to you. Click "Next."
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Accept default entries on the "Name and Security Settings" window. Click "Next" to proceed.
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Type the name of your company/organization under "Organization." Do the same for "Organizational Unit."
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Click "Next."
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Type the name of the website under "Common name." For example: "www.yourorganization.com."
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Click "Next."
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Enter your "State/Province" and "City/locality" and select "Next."
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Accept the default path for your certificate request. The file name is "certreq.txt." Click "Next."
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Review information and select "Next."
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Click "Finish" to end the wizard.
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Click "OK" to close the "Default Web Site Properties" dialog.
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