Cisco Cisco Email Security Appliance C170

Traceback Generated After Technical Support Tunnel Tails for DNS-related Reasons. 
Previously, when attempting to establish a secure tunnel through which Cisco IronPort technical 
support can connect to the appliance, if the tunnel attempt fails for reasons related to DNS, AsyncOS 
generates a traceback.

Large Number of Content Filter Matches May Result in PDF Report Error. Fixed an issue a 
printable PDF report for content filters may contain the error message “one of tables has too many 
columns” due to a large number of incoming or outgoing content filter matches. Now, the PDF report 
prints out correctly.

Spam Digest Notification Email Does Not Display Correctly in Japanese. Fixed an issue where 
the spam digest notification email did not display its information in Japanese correctly when 
localized.

telnet to Appliance that Does Not Have an A or AAAA Record Results in Traceback. Fixed an 
issue where a traceback occurred when you attempt to telnet into an appliance that does not have an 
A or AAAA DNS record.

Outlook Improperly Displays Messages with Body and Footer Encoded Differently. Footers 
added to messages by the appliance can be encoded as text/plain or text/html. Previously, if the 
message body and footer are not encoded the same way, Microsoft Outlook will only display the 
footer.This issue has been resolved. Now the message body and footer are properly displayed in 
Outlook.

resourceConservationMode SNMP Trap Missing. Fixed an issue where the 
resourceConservationMode SNMP trap was not available on the appliance.

The following is a list of resolved issues in the Cisco IronPort AsyncOS 7.6.1 for Email release.

Mail Delivery to Destination Goes Offline After Over 5000 Messages to the Same Destination 
Are Queued. In the previous versions of AsyncOS 7.6, mail delivery to a destination may go offline 
if the appliance had to queue over 5000 messages for that destination before it could delivery them. 
This could happen, for example, if an organization’s mail servers go offline for maintenance and the 
appliance has to queue messages until the servers are back online. When delivery resumed, the 
appliance may have only delivered a few messages. The remaining messages for that destination 
would not be delivered. This issue has been resolved and queued messages will be delivered. 

Switching from RSA Enterprise Manager Mode to Local RSA Email DLP Mode Using Wizard 
Causes Errors. In the AsyncOS 7.6.0 release, if you switched the appliance from RSA Enterprise 
Manager mode to the local RSA Email DLP mode and then used the DLP Assessment Wizard to 
create new policies, the multiple errors occur if Enterprise Manager did not send any DLP policies 
to the appliance before you switched the DLP modes. 

Deleting Message Action Used in Existing DLP Policies Results in Application Fault. In the 
AsyncOS 7.6.0 release, if you deleted a message action that was being used by one or more DLP 
policies, an application fault occurred when you committed the change without first reconfiguring 
the affected DLP policies with a new message action.

Some Pre-upgrade Reporting Data is Missing from Incoming Mail: IP Address Report Details. 
When upgrading to AsyncOS 7.6.0, IP addresses in pre-upgrade data that are in the range 128.x.x.x 
to 255.x.x.x would be counted in the report summary, but would not be available in report details.

Errors in Japanese Localization of User Interface. AsyncOS 7.6.1 fixes a number of translation 
errors in the Japanese localization of the user interface. These errors appeared on multiple spam 
quarantine pages and the end user quarantine online help.