Recreating a Self-Signed SSL Certificate in ZCS 4.5 & 5.0

Revision as of 06:42, 14 November 2006 by Jdell (talk | contribs) (need to run keytool as zimbra and note for how to change default_days)

Self Signed Certificate Instructions

If you're working with a commercial certificate, don't use this page - go here instead

To clean up SSL certificates and recreate a new self-signed cert try this.

it won't hurt to back up what you already have:

tar -cf /tmp/zimbra-ssl-bak.tar /opt/zimbra/ssl/

as root:

rm -rf /opt/zimbra/ssl
mkdir /opt/zimbra/ssl
chown zimbra:zimbra /opt/zimbra/ssl
chown zimbra:zimbra /opt/zimbra/java/jre/lib/security/cacerts
chmod 644 /opt/zimbra/java/jre/lib/security/cacerts

(on linux: )

su - zimbra
keytool -delete -alias my_ca -keystore /opt/zimbra/java/jre/lib/security/cacerts -storepass changeit

(on mac os x:)

keytool -delete -alias my_ca -keystore /System/Library/Frameworks/JavaVM.framework/Versions/1.5/Home/lib/security/cacerts -storepass changeit

(back to everybody:)

su - zimbra

keytool -delete -alias tomcat -keystore /opt/zimbra/tomcat/conf/keystore -storepass zimbra

(if you want certificate to last longer than 365 days, edit /opt/zimbra/conf/ and change value for default_days)

zmcertinstall mailbox /opt/zimbra/ssl/ssl/server/tomcat.crt
zmcertinstall mta /opt/zimbra/ssl/ssl/server/server.crt /opt/zimbra/ssl/ssl/server/server.key

It may be necessary to restart the Zimbra servers for the changes to take effect.

su - zimbra
zmcontrol stop
zmcontrol start

unable to write random state

This is a "harmless" warning that openssl has no random number seed file. The full story is available from

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