Renew Zimbra Certificate

su – zimbra
zmcontrol stop


cd /opt/zimbra/bin
./zmcertmgr createcrt -new -days 365
./zmcertmgr deploycrt self
./zmcertmgr viewdeployedcrt

su – zimbra

zmcontrol restart




To view the certificate

 /opt/zimbra/bin/zmcertmgr viewdeployedcrt