SpamAssassin mail proxy

Freshness Warning
This article is over 17 years old. It's possible that the information you read below isn't current.

"McD" has written a SpamAssassin POP3 proxy in Perl in order to filter Windows mail through SpamAssassin.

August 30, 2002 1:09 AM

Wow! Very cool! Now we're cooking in the fight against spam! Unfortunately, it will also mean that the SA guys will have to work even harder to stay on top of the spammers' creativity in evading such filters. There's also a paid version of SpamAssassin for MS Outlook-users: (I guess they are using the same core engine as the regular SA...)

August 30, 2002 6:21 AM

I've been running spamassassin for six months now. Wouldn't want to live without it ever again. Though I'm curious about the Bayes statistical approach. I might write a perl thingie to pass all mail through via procmail using Bayesian logic.

Adam Kalsey
August 30, 2002 8:48 AM

The problem with the Deersoft and Cloudmark plugins is that they run inside of Outlook and only see mail in the format that Outlook displays it. This isn't a problem for most people because Outlook doesn't alter their mail. But if you use Outlook XP SP1, you can disable the display of HTML mail. If you do this, Outlook converts HTML mail to plain text with links displayed as URLs in the text. And it does this before plugin gets it's hands on it, so the plugin doesn't see exactly what it expects. When I tried the Deersoft and Cloudmark plugins, my success rate at detecting spam was around 10%. Using a proxy not only removes this flaw, but also makes filtering available to users of other mail clients.

Adam Kalsey
August 30, 2002 8:50 AM

The next version of SpamAssassin is going to be released very soon and will have Bayesian filtering. According to what I've read, though, statistical filtering is not as successful in the real world as it is in small tests. It still works well, just not witht he 99% accuracy some tests have shown.

Adam Kalsey
September 3, 2002 6:01 PM

SpamAssassin 2.4 is out, but I don't see anything in the docs that referernces statistical filtering. If you like the idea of a SpamAssassin POP proxy, you might be interested in a couple of other SA filtering options: IMAP filtering Eudora Plugin

Your comments:

Text only, no HTML. URLs will automatically be converted to links. Your email address is required, but it will not be displayed on the site.


Not your company or your SEO link. Comments without a real name will be deleted as spam.

Email: (not displayed)

If you don't feel comfortable giving me your real email address, don't expect me to feel comfortable publishing your comment.

Website (optional):

Follow me on Twitter

Best Of

  • Google on the desktop Google picks up Picasa, giving them an important foothold on people's PCs.
  • Embrace the medium The Web is different than print, television, or any other medium. To be successful, designers must embrace those differences.
  • Simplified Form Errors One of the most frustrating experiences on the Web is filling out forms. When mistakes are made, the user is often left guessing what they need to correct. We've taken an approach that shows the user in no uncertain terms what needs to be fixed.
  • Let it go Netscape 4 is six years old.
  • Lock-in is bad T-Mobile thinks they'll get new Hotspot customers with exclusive content and locked-in devices.
  • More of the best »

Recently Read

Get More

Subscribe | Archives


Managers and technical ability (Dec 26)
In technical fields, the closer you are to the actual work being done, the closer your skills need to resemble those of the people doing the work.
Dysfunctions of output-oriented software teams (Sep 17)
Whatever you call it, the symptom is that you're measuring your progress by how much you build and deliver instead of measuring success by the amount of customer value you create.
Evaluative and generative product development (Aug 30)
Customers never even talk to the companies that don't fit their needs at all. If the only product ideas you're considering are those that meet the needs of your current customers, then you're only going to find new customers that look exactly like your current customers.
Product Manager Career Ladder (Aug 19)
What are the steps along the product management career path?
Building the Customer-Informed Product (Aug 15)
Strong products aren't composed of a list of features dictated by customers. They are guided by strong visions, and the execution of that vision is the primary focus of product development.
Assumptions and project planning (Feb 18)
When your assumptions change, it's reasonable that your project plans and needs change as well. But too many managers are afraid to go back and re-work a plan that they've already agreed to.
Feature voting is harmful to your product (Feb 7)
There's a lot of problems with using feature voting to drive your product.
Encouraging 1:1s from other managers in your organization (Jan 4)
If you’re managing other managers, encourage them to hold their own 1:1s. It’s such an important tool for managing and leading that everyone needs to be holding them.

Subscribe to this site's feed.


Adam Kalsey

Mobile: 916.600.2497

Email: adam AT

Twitter, etc: akalsey



©1999-2020 Adam Kalsey.