Cisco Cisco Email Security Appliance C170

9.1.2-036

If you upgrade to AsyncOS 9.1.2-041 from one of the above versions, you cannot revert to any of the 
previous versions.

If you have manually created a policy quarantine with the name "File Analysis," you must eliminate 
this quarantine before upgrading from a release earlier than AsyncOS 9.0. 

You can do this by creating another quarantine with a different name, moving the messages to this 
new quarantine, then deleting the existing File Analysis quarantine. For more information about 
moving messages between policy quarantines, see the user guide or online help. 

If you do not do this, the system will not create the File Analysis quarantine that is used to 
automatically process messages sent for analysis. 

After upgrade, and after you configure the system to send messages to the new system-created File 
Analysis quarantine, you may want to delete, or disable in your incoming mail policies, any content 
filters that you previously created to quarantine messages with files sent for analysis. 

If a cluster includes C160, C360, C660, or X1060 hardware appliances, remove these appliances from 
the cluster before upgrading. 

All machines in a cluster must be running the same version of AsyncOS, and x60 hardware cannot be 
upgraded to this release. If necessary, create a separate cluster for your x60 appliances. 

If you are upgrading from a major (AsyncOS X.0) or minor (AsyncOS X.x) release other than the release 
immediately preceding this release, you should review the Release Notes for major and minor releases 
between your current release and this release. 

Generally, configuration files from earlier AsyncOS releases are incompatible with later AsyncOS 
releases and vice-versa. Use a configuration file from the same release as your installed release. 

Review the 

 and 

If you are upgrading a virtual appliance, see 

Use the following instructions to upgrade your Email Security appliance.

Save the XML configuration file off the appliance.