Cisco Cisco Email Security Appliance C680 Release Notes
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Release Notes for AsyncOS 9.1.2 for Cisco Email Security Appliances
Installation and Upgrade Notes
Step 2
If you are using the Safelist/Blocklist feature, export the Safelist/Blocklist database off the appliance.
Step 3
Suspend all listeners.
Step 4
Wait for the queue to empty.
Step 5
From the System Administration tab, select the System Upgrade page.
Step 6
Click the Available Upgrades button. The page refreshes with a list of available AsyncOS upgrade
versions.
versions.
Step 7
Click the Begin Upgrade button and your upgrade will begin. Answer the questions as they appear.
Step 8
When the upgrade is complete, click the Reboot Now button to reboot your appliance.
Note
[CSCug10844] Important! Do not interrupt power to the appliance for any reason (even to
troubleshoot an upgrade issue) until at least 20 minutes have passed since you rebooted. If you
have an x80 or x90 hardware appliance, do not push the power button until all LEDs are lit. If
you have a virtual appliance, do not use the hypervisor or host OS tools to reset, cycle, or power
off the virtual machine.
troubleshoot an upgrade issue) until at least 20 minutes have passed since you rebooted. If you
have an x80 or x90 hardware appliance, do not push the power button until all LEDs are lit. If
you have a virtual appliance, do not use the hypervisor or host OS tools to reset, cycle, or power
off the virtual machine.
Step 9
Resume all listeners.
Performance Advisory
RSA Email DLP - Enabling RSA Email DLP for outbound traffic on an appliance that is also running
anti-spam and anti-virus scanning on inbound traffic can cause a performance decrease of less than 10%.
Appliances that are only running outbound messages and are not running anti-spam and anti-virus may
experience a significant performance decline.
anti-spam and anti-virus scanning on inbound traffic can cause a performance decrease of less than 10%.
Appliances that are only running outbound messages and are not running anti-spam and anti-virus may
experience a significant performance decline.
SBNP - SenderBase Network Participation now uses the Context Adaptive Scanning Engine (CASE) to
collect data to power IronPort Information Services. In some configurations customers may experience
a moderate performance decline.
collect data to power IronPort Information Services. In some configurations customers may experience
a moderate performance decline.
Outbreak Filters - Outbreak Filters uses the Context Adaptive Scanning Engine to determine the threat
level of a message and scores messages based on a combination of Adaptive Rules and Outbreak Rules.
In some configurations, you may experience a moderate performance decline.
level of a message and scores messages based on a combination of Adaptive Rules and Outbreak Rules.
In some configurations, you may experience a moderate performance decline.
IronPort Spam Quarantine - Enabling the IronPort Spam Quarantine on-box for a C-Series or X-Series
appliance causes a minimal reduction in system throughput for nominally loaded appliances. For
appliances that are running near or at peak throughput, the additional load from an active quarantine may
cause a throughput reduction of 10-20%. If your system is at or near capacity, and you desire to use the
IronPort Spam Quarantine, consider migrating to a larger C-Series appliance or an M-Series appliance.
appliance causes a minimal reduction in system throughput for nominally loaded appliances. For
appliances that are running near or at peak throughput, the additional load from an active quarantine may
cause a throughput reduction of 10-20%. If your system is at or near capacity, and you desire to use the
IronPort Spam Quarantine, consider migrating to a larger C-Series appliance or an M-Series appliance.
If you change your anti-spam policy from dropping spam to quarantining it (either on-box or off-box),
then your system load will increase due to the need to scan additional spam messages for virus and
content security. For assistance in properly sizing your installation please contact your authorized
support provider.
then your system load will increase due to the need to scan additional spam messages for virus and
content security. For assistance in properly sizing your installation please contact your authorized
support provider.