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Solution ID : SO22363

Last Modified : 05/21/2018

Managed PKI for SSL - Certificate Signing Request (CSR) Generation Instructions for Zimbra 5.0.x, 6.0.x, & 7.0.x


This document provides instructions for generating a Certificate Signing Request (CSR) for  Zimbra server. If you are unable to use these instructions for your server, Symantec recommends that you contact Zimbra vendor.
NOTE: To generate a CSR, you will need to create a key pair for your server. These two items are a digital certificate key pair and cannot be separated. If you lose your public/private key file or your password and generate a new one, your SSL Certificate will no longer match.

To generate a Certificate Signing Request (CSR) on Zimbra 5.0.x, 6.0.x, & 7.0.x server, follow one of the methods bellow:

Method 1: Generate CSR using the command line interface:

  1.  Log in as root.
  2.  Run the following zmcertmgr command to generate a CSR.
    /opt/zimbra/bin/zmcertmgr createcsr comm -new -subject "/C=US/ST=California/L=Mountain View/O=My Company/OU=IT Department/CN=$"The following fields are required when generating a Certificate Signing Request (CSR)
  3. The following fields are required when generating a Certificate Signing Request (CSR)
  • Country Name (C): Enter the two-character abbreviation of country in which organization resides (e.g. US).
  • State or Province (S): Enter the full name of your state or province.
    Note: Make sure the State or Province is not abbreviated (e.g. California).
  • Locality or City (L): Usually the city of your organization's main office, or a main office for your organization.
  • Organization (O): The full legal name of your company.
  • Organizational Unit (OU): Use this field to differentiate between divisions within an organization.
  • Common Name (CN): The fully-qualified domain name to which your certificate will be issued..

For more information on Zimbra server using CLI commands, please click here.

Method 2: Generate CSR through Zimbra Admin Console:

  1. Open a browser window and create CSR through Zimbra Admin Console
  2. Login to the Admin Console and click Certificates.
  3. Click Install Certificate.
  4. Select Target Server.
  5. Select Generate the CSR for the Commercial Certificate Authorizer.
  6. Create the CSR, then download and save the CSR file.

Once the certificate has been issued, follow the steps from this link to install the certificate on your server.