("Mike Gaskins" wrote)
[snip]
If you want to drop the spam without resorting to auto-challenge
systems, you would do well to look into SpamAssasssin (it's free).
I've got it checking our incoming mail (along with my home mail
accounts). It uses a multi-tiered approach (blacklisting, RBL's,
content rules, bayesian analysis, online tests w/ DCC & Razor) that
does a LOT to help block it. I've also got my Postfix MTA set to use
greylisting. This combined with a freeware virus scanner has
eliminated over 99% of our incoming spam, and it's literally been
months since I got a spam message at home.


Our ISP is now using Postini. We're very happy with the results.
http://www.postini.com/

I got flagged just today. I checked in with Postini, through the e-mail link
they send, and saw it was my own yahoo.com messages. I had recently sent a
few saved messages to my home e-mail account.

I clicked Approve Sender (me!) and all was good again. 4 years ago we were
getting 10-20 per day, now we're down around 5 spams a month.

When Postini first kicked in we only lost a couple of people. We checked
daily for known addresses before deleting the junk. Now it's on autopilot.


Montblack