To Generate a CSR in Microsoft Exchange 2003 follow the instructions below:
- Click Start, point to Programs, point to Microsoft Exchange, and click System Manager.
- If the Display administrative groups option is turned on, expand Administrative Groups, and then expand First Administrative Group (where First Administrative Group is the name of your administrative group).
Note To display administrative groups, right-click Your_Organization, click Properties, click to select the Display administrative groups check box, click OK two times, and then restart Exchange System Manager.
- Expand Servers, expand the Exchange Server container that you want to configure, and then expand the Protocols container.
- Expand each protocol that you want to configure, right-click the Default Protocol_Name virtual server object, and click Properties.
- Click the Access tab, and click Certificate.
- In Web Server Certificate Wizard, click Next, click Create a new certificate, and click Next.
- Click Prepare the request now, but send it later, and click Next.
- Either type an appropriate name for the certificate in the Name box, or leave the default setting of Default Protocol_Name Virtual Server.
- In the Bit Length list, select 2048 and click Next.
- In the Organization box and the Organizational unit box, type the organization and the organizational unit information, and click Next.
- In the Common name box, type the common name for your site, and click Next.
Note If you want to allow access from the Internet, this name must be a fully qualified domain name (FQDN) that can be resolved externally. This FQDN must map to the IP address that is linked to the virtual server. IP addresses are not accepted.
- In the Country/Region list, click your country or your region name.
- In the State/Province box, and in the City/Locality box, type the information that is appropriate for your organization, and click Next.
- In the File name box, do one of the following:
- Type a name and a path for the location where you want to create the certificate.
- Leave the default file name in this box.
- Click Next.
- Review the information that is on the Request File Summary page. If something is not correct, click Back until you reach the page that must be corrected, and click Next until you return to the Request File Summary page, and click Next.
- The final page confirms that a certificate with the specified file name has been created. The default setting is drive name:\certreq.txt.
- Click Finish.
For Instructions how to install the SSL Certificate see solution : SO19692
These instructions are extracted from Microsoft's website: http://support.microsoft.com/kb/823024