It is not a bad idea. In fact, I think it is a damn good one, no matter what Microsoft says. Put the responsibility for safe computing in the hands of the user, much like the responsibility one has when behind the wheel. If you are somehow infected through carelessness (or flat out ineptitude), you can continue your work, just within the confines of your Linksys router instead of my hard drive.
Aunty Spam posted this quick and dirty analysis of why spammers can’t hide behind CAN-SPAM and pursue ISPs for blocking their email: CAN-SPAM Allows ISPs to Filter Email – Reported by Aunty Spam’s Net Patrol. Nice work.
Spammers are chasing ISPs because that is where the money trail ends. If an ISP uses Linux serves, and has Sendmail/SpamAssassin running, the dirty little spam-muffin can’t really sue the software company, as that stuff is open source. As the combination takes care of clear majority of the traffic out there, spammers turn to those who installed it.
Good thing our court system has this little concept called “precedence” imbedded in its thinking. A couple of quick decisions by some standup judges will stop this whining, and shut one more door on spam.