Cisco Cisco Email Security Appliance C380 Release Notes

For DKIM Authentication, IronPort currently supports version 8 of the Draft 
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.

IronPort does not generally support the backward compatibility of configuration 
files with previous major releases. AsyncOS 7.1 does not support configuration 
files from AsyncOS 7.0.1 or earlier. 

If you previously used a custom notification template, headers were included by 
default. When you upgrade to AsyncOS version 5.0 or later, notification templates 
do not include headers by default. To include headers, you can add the 

$allheaders 

message filter action variable. [Defect ID: 27710]

When you configure AsyncOS to use received headers, you can specify that the 
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 

strip-header

 filter action configured to strip received 

headers will strip the received header inserted by AsyncOS. [Defect IDs: 16254, 
25816]