Neal, best place to find information about kerio 2.1.5 is of course it's own forum:
http://www.dslreports.com/forum/kerioThere are rulesets given by people, most important is I guess the so called BZ ruleset. And other information about the firewall.
Another site to recommend these days is:
http://www.wilderssecurity.com/index.phpBut there is also much passionate talks too about whose software is better than others that confuse the information there can be gathered.
My post is also given here to help users with avast proxies to configure their firewall. Sded has posted in this forum also some very usefull information.
Remember a rule based firewall is only as good or bad as rules given to it.
EDIT
Alwill team still not willing to share information about their IM protection?
With webshield one can always go and test with eicar test virus.
Also with email shield, one can get to be send a test virus in email if not the ISP is not scanning that traffic as a service.
One site, my former antivirus:
http://www.norman.com/Virus/Antivirus_testfileSorry if it is part finnish language that web site.
But how can one test if IM provider is working or just placebo one believes is there?