Cisco Cisco Email Security Appliance C170 Release Notes

Please be aware of the following upgrade impacts:

In previous versions of AsyncOS, AsyncOS upgrades, PXE Engine updates, and 
McAfee Anti-Virus definitions could use a different update server than services 
such as IronPort Anti-Spam rules and Feature Key rules. In AsyncOS 7.5.1, 
AsyncOS upgrades use the same update server as all of the service updates, 
whether it’s an IronPort update server or a local update server. This will prevent 
you from using a local server for AsyncOS upgrades and an IronPort update server 
for all other service updates unless you configure the appliance to use a manifest 
on a local appliance to perform an AsyncOS upgrade and the re-configure the 
appliance to use an IronPort update server for the other services after the upgrade 
is complete.

SNMP does not start when you boot the appliance after upgrading to AsyncOS 
7.5.1. Use snmpconfig -> setup and then commit to enable it.

Clear the cached Outbreak Rules (formerly 

vofflush

)

Display current Outbreak Rules (formerly 

vofstatus

)

Update Outbreak Filters rules (formerly 

vofupdate

)

Redirect all messages to another relay host

Show messages from the queue

Configure characters for Sieve Email Filtering

Update timezone rules

Update all components