Ironport can make those claims because they work on reputation - which means that when new SPAM comes out their reputation filters work on it without having to make any modifications.
This also means that SPAM from bots gets through until their filters catch up and start building a negative reputation. This results in no fp's but also let's through a lot of SPAM until it catches up. They sacrifice fp's for no immediate blocking of new sources of SPAM. They're used a lot in larger enterprises. That's all I know... Hope this helps. Thomas J. Raef e-Based Security, LLC www.ebasedsecurity.com 1-866-838-6108 "You're either hardened, or you're hacked!" -----Original Message----- From: Patrick Sherrill [mailto:[EMAIL PROTECTED] Sent: Sunday, July 15, 2007 7:03 PM To: users@spamassassin.apache.org Subject: Iron Port experiences Has anyone any Iron Port experiences they could share? We appear to be losing a larger account to Iron Port and am curious regarding their No FP claims. Pat...
