Learn more about the “Heartbleed” security threat from this link:
Zimbra’s security team reacted quickly, issuing a patch for the “Heartbleed” threat within a few hours. The “Heartbleed” patch supports a generation of new SSL certificates and other remedies. We strongly recommend application of the “Heartbleed” patch IMMEDIATELY. After application of the patch, as a precautionary measure, we strongly recommend system-wide password resets.
Get the patch here:
If 3rd party applications have been integrated with the Zimbra platform, we suggest revising the credentials on those applications, then logging out and back into those applications, as a precaution.
If you have any questions, please reach out to Zimbra Support, or reply to this post or other related posts. Zimbra is always happy to help you manage and react to threats and others issues.