Cisco Cisco Email Security Appliance X1070 Notas de publicación
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Release Notes for Cisco AsyncOS 9.1 for Cisco Email Security Appliances
Changes in Behavior
Changes in Behavior
While configuring the global settings for listeners, you can now specify whether to accept or reject
messages based on the size of the subject. If you specify this parameter, messages having subject size
within the specified limit will be accepted and any other messages will be rejected. For more
information, see Cisco AsyncOS for Email User Guide.
messages based on the size of the subject. If you specify this parameter, messages having subject size
within the specified limit will be accepted and any other messages will be rejected. For more
information, see Cisco AsyncOS for Email User Guide.
Upgrade Paths
Important!
See the following sections before upgrading:
•
Hardware appliances: This release is supported only on certain models. See
.
•
Virtual appliances: To ensure that you obtain all of the benefits of this release, see
•
Cluster configurations (centralized management): Take action before you upgrade your cluster.
See
See
.
•
To ensure a successful upgrade: You must complete some steps before you start the upgrade
process. For details on these prerequisites, see
process. For details on these prerequisites, see
.
Updater
enhancements
enhancements
Cisco AsyncOS 9.1 for Email includes the following updater
enhancements:
enhancements:
•
Email security appliance can check the validity of the Cisco updater
server certificate every time the appliance communicates with the
updater server.
server certificate every time the appliance communicates with the
updater server.
•
If you are using a non-transparent proxy server, you can add the CA
certificate used to sign the proxy certificate to the appliance. By doing
so, the appliance trusts the proxy server communication.
certificate used to sign the proxy certificate to the appliance. By doing
so, the appliance trusts the proxy server communication.
For more information, see Cisco AsyncOS for Email User Guide.
Option to disable
SSLv3 for enhanced
security
SSLv3 for enhanced
security
For enhanced security, you can disable SSLv3 for the following services:
•
Updater
•
URL Filtering
•
End User Quarantine
•
LDAP
You can use the
sslv3config
command in CLI to disable SSLv3 for the
above services. For more information, see Cisco AsyncOS for Email User
Guide.
Guide.
Feature Description