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Solution ID : SO5675

Last Modified : 06/12/2019

Certificate Signing Request (CSR) Generation Instructions for Microsoft Exchange 2007



This document provides instructions for generating a Certificate Signing Request (CSR) for Exchange 2007.
If you are unable to use these instructions for your server, DigiCert recommends that you contact Microsoft

Step 1: To generate a CSR,  use the Exchange Management Shell and perform the following steps:

  1. Click Start > All Programs > Microsoft Exchange Server 2007 > Exchange Management Shell
  2. The CSR needs to contain the following attributes:
  • Common Name (C): The Fully Qualified Domain Name that the certificate will be issued to and secure.
    NOTE: DigiCert certificates can only be used on Web servers using the Common Name specified during enrollment.
    For example, a certificate for the domain "" will receive a warning if accessing a site named "".
  • Organization (O): The Registered Organizational Name the certificate belongs to. If the company or department has an &, @, or any other symbol using the shift key in its name, the symbol must be spelled out or omitted, in order to enroll.
  • Organizational Unit (OU): The Department within the Organisation
  • State (S): The business registered state or province. Do not abbreviate the state or province name, for example: California not CA
  • Locality (L): The Business registered location/city (not the actual server location).
  • Country/region (C): The two letter ISO country code

NOTE: For all certificates the key bit length must be 2048 (-keysize 2048)

For further reference please check the Microsoft Knowledge Base.

NOTE: Requirements for Subject Alternative Name certificates:

The Certificate Signing Request (CSR) file should contain the common name only. The SANs will be added during the enrollment by selecting the numbers of SANs needed, then added in the box on the following page.

To enroll for a SAN certificate follow these steps

  1. Verify your CSR
  2. Proceed with Enrolment.
    NOTE: During the enrolment open the file you created from the above steps and copy the contents into the enrollment form when requested for the CSR.

Once the certificate has been issued follow these steps to install the certificate