Cisco Cisco Email Security Appliance X1070
11
Release Notes for Cisco IronPort AsyncOS 7.3.1 for Email
OL-23626-02
Software Notes
Email Authentication
For DKIM Authentication, IronPort currently supports version 8 of the Draft
Specification of ‘Authentication-Results:’ header.
Specification of ‘Authentication-Results:’ header.
For SPF/SIDF verification, the
spf-passed
rule is no longer available in content
filters. To maintain backwards compatibility, the
spf-passed
content filter rule
will be accepted from XML configuration files but it will be converted to the
spf-status
rule with corresponding arguments.
spf-passed
will be changed to
spf-status == "Pass"
and NOT spf-passed to
spf-status != "Pass"
. You can,
however, still use the
spf-passed
message filter.
Received Headers
When you configure AsyncOS to use received headers, you can specify that the
header reflects one of the following hostnames:
header reflects one of the following hostnames:
•
The hostname of the Virtual Gateway used for delivering the message
•
The hostname of the interface the message is received on
You specify the hostname from the CLI command
listenerconfig-> setup
. You
cannot configure the hostname from the GUI.
If you configure the received header to display the hostname of the interface the
message is received on, a
message is received on, a
strip-header
filter action configured to strip received
headers will strip the received header inserted by AsyncOS. [Defect IDs: 16254,
25816]
25816]
Feature Keys
The AsyncOS appliance checks for and applies feature keys at one minute
intervals. Therefore, when you add a feature key, it may take up to a minute to
view the changes. [Defect ID: 29160]
intervals. Therefore, when you add a feature key, it may take up to a minute to
view the changes. [Defect ID: 29160]
Upgrading to the AsyncOS 7.3 Release
Appliances cannot be upgraded to the AsyncOS 7.3 for Email release.