How to disable the Zimbra virus scanner from blocking encrypted archives and filesDec 13
If you receive this message from your Zimbra server, then it is likely that an encrypted PDF or ZIP has been quarantined simply because the Zimbra virus scanner could not examine the contents of the file.
Our content checker found
This feature can be disabled, so that encrypted archives will pass the virus scanner. However, this does not mean that you are now vulnerable to viruses. Since the virus scanner has a database of signatures for viruses and malware, so should still be able to catch real security threats.
To disable the blocking of encrypted archives by Zimbra anti-virus scanner, perform these steps in the Zimbra Web Admin console.