You can easily add, manage, and view self-signed and commercial certificate from the administration console.
The CLI, zmcertmgr can be used to manage your certificate from the command line.
A certificate is the digital identity used for secure communication between different hosts or clients and servers. Certificates are used to certify that a site is owned by you. Two types of certificates can be used with Zimbra Collaboration Server self signed and commercial certificates.
A self-signed certificate is an identity certificate that is signed by its own creator.
You can use the Certificate Installation Wizard to generate a new self-signed certificate. This is useful when you use a self-signed certificate and want to change the expiration date. The default is 365 days. Self-signed certificates are normally used for testing.
A commercial certificate is issued by a certificate authority (CA) that attests that the public key contained in the certificate belongs to the organization (servers) noted in the certificate.
To obtain a commercially signed certificate, use the Zimbra Certificates Wizard to generate the RSA Private Key and Certificate Signing Request (CSR). You download the CSR from the Zimbra server and submit it to a Certificate Authority, such as VeriSign or GoDaddy. They issue a digitally signed certificate, and when you receive the certificate, you use the Certificates Wizard to install the certificate on the Zimbra Collaboration Server.
To install a Certificate, see Installing Certificates
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