Cisco Cisco Email Security Appliance C160

Release and Support 
Notifications 

You can now receive software release and critical support notifications from 
Cisco Support (in the form of alerts). 

S/MIME Security 
Services

AsyncOS for Email now allows organizations to communicate securely using 
S/MIME without requiring that all end-users possess their own certificates. 
Organizations can handle message signing, encryption, verification, and 
decryption at the gateway level using certificates that identify the 
organization rather than the individual.

AsyncOS provides the following S/MIME security services:

Sign, encrypt, or sign and encrypt messages using S/MIME

Verify, decrypt, or decrypt and verify messages using S/MIME

Cisco AsyncOS API 
for Email

The Cisco AsyncOS API for Email (or AsyncOS API) is a Representational 
StateTransfer (REST)-based set of operations that provide secure and 
authenticated access to the Email Security appliance reports and report 
counters. You can retrieve the Email Security appliance reporting data using 
this API.

See Cisco AsyncOS API for Email - Getting Started Guide.

File Analysis 
Quarantine

AsyncOS for Email now includes an Advanced Malware Protection-specific 
quarantine. You can configure the appliance to quarantine messages with 
attachments sent for analysis.

Before upgrading to this release, see an important caveat at 

Virtual Appliance 
enhancements

Support for thin provisioning 

Support for ESXi 5.5 

Access to more than 2 TB of disk space 

However, when upgrading a virtual appliance, an important caveat 
applies. See 

Customizable disk 
space 

You can now allocate disk space on the appliance based on the functionality 
your organization uses (spam and system quarantines, reporting and tracking 
data, etc.) 

Previous limits on quarantine size have been removed. 

For virtual appliances, you can use VMWare tools to increase the disk space 
available to Email Security appliance instances. However, in order to access 
more than 2 TB of disk space on upgraded virtual appliances, see 

If you are upgrading, see also 

.