Looking specifically at the output:
> asstatus
Choose the operation you want to perform:
- IRONPORT - Display IronPort Anti-Spam version and rule information.
- CLOUDMARK - Display Cloudmark Service Provider Edition version and rule information.
- MULTISCAN - Display Intelligent Multi-Scan version and rule information.
[]> ironport
Component Last Update Version
CASE Core Files 19 Oct 2015 13:12 (GMT +00:00) 3.5.0-008
CASE Utilities 19 Oct 2015 13:12 (GMT +00:00) 3.5.0-008
Structural Rules 12 Nov 2015 04:19 (GMT +00:00) 3.5.0-20151112_000901
Web Reputation DB 11 Nov 2015 21:34 (GMT +00:00) 20151111_203950
Web Reputation DB Update 12 Nov 2015 10:59 (GMT +00:00) 20151111_203950-20151112_105136
Content Rules 12 Nov 2015 13:35 (GMT +00:00) 20151112_133158
Content Rules Update 12 Nov 2015 13:35 (GMT +00:00) 20151112_133301
Bayes DB 11 Nov 2015 22:25 (GMT +00:00) 20151111_200713-20151111_211307
CASE = Cisco Anti-Spam Engine
The core files & utilities are associated to the actual engine.
The structural rules are all the rules/signatures that provide the anti-spam service on the ESA. The rules are updated by default each five minutes - and included in the updateconfig settings.
This is one option you have for scanning spam on the appliance. You have a choice of either Cisco Intelligent Multi-Scan, Cisco Anti-Spam engine, or Cloudmark. See the user guide for complete information.
-Robert