Cisco Cisco Email Security Appliance X1070 Notas de publicación

This section describes the new features and enhancements that have been added in the Cisco IronPort 
AsyncOS 7.6 for Email release. You might also find it useful to review release notes from earlier 
releases.

AsyncOS 7.6 adds Internet Protocol Version 6 (IPv6) address compatibility to your Email Security 
appliance. You can use both IPv4 and IPv6 addresses for your appliance’s IP interfaces. IPv6 addresses 
are also an option for the following features:

Gateways (default routers) and static routes.

SMTP routes.

SMTP Call Ahead.

Trace.

Senders for Host Access Tables.

Recipients for Recipient Access Tables.

Content Filter’s Remote IP condition and Send to Alternate Destination Host action.

Destination Controls, where you can specify whether IPv4 or IPv6 addresses are preferred.

Outbreak Filters’ Bypass Domain Scanning field.

Report searches.

AsyncOS supports the following formats for IPv6 addresses:

2620:101:2004:4202::0-2620:101:2004:4202::ff

2620:101:2004:4202::

2620:101:2004:4202::23

2620:101:2004:4202::/64

84389

If you have configured a private listener on the appliance to sign a message using 
DKIM, it was possible in previous versions of AsyncOS that the appliance may not 
have delivered one of the messages if the original message was splintered. This would 
result in one of the splintered messages in being lost. This issue has been resolved.

84071

Fixed an error where an injection debug log with Syslog Push as a retrieval method 
could cause the appliance’s work queue to crash when work queue processing is 
restarted.