ZCS 7.0.x, 6.0.x, and 5.0.x zmcertmgr This command allows you to manage certificates. General Guidelines Follow these guidelines when using this command. This tool must be run as root Single-Node Self-Signed Certificate 1.  Begin by generating a new Certificate Authority (CA). /opt/zimbra/bin/zmcertmgr createca -new 2. Then generate a certificate signed by the CA that expires […]