SpamAssassin mail proxy

Freshness Warning
This article is over 16 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

  • Rounded corners in CSS There lots of ways to create rounded corners with CSS, but they always require lots of complex HTML and CSS. This is simpler.
  • The mouse and me Not only is the mouse very destructive, but it's evaded all attempts to capture or kill it so far.
  • Embrace the medium The Web is different than print, television, or any other medium. To be successful, designers must embrace those differences.
  • Let it go Netscape 4 is six years old.
  • Newly Digital Newly Digital is an experimental writing project. I've asked 11 people to write about their early experiences with computing technology and post their essays on their weblogs. So go read, enjoy, and then contribute. This collection is open to you. Write up your own story, and then let the world know about it.
  • More of the best »

Recently Read

Get More

Subscribe | Archives


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.
One on One Meetings - a collection of posts about 1:1s (Jan 2)
A collection of all my writing on 1:1s
Are 1:1s confidential? (Jan 2)
Is the discussion that occurs in a 1:1 confidential, even if no agreed in the meeting to keep it so?
Skip-level 1:1s are your hidden superpower (Jan 1)
Holding 1:1s with peers and with people far below you on the reporting chain will open your eyes up to what’s really going on in your business.

Subscribe to this site's feed.


Adam Kalsey

Mobile: 916.600.2497

Email: adam AT

Twitter, etc: akalsey



©1999-2019 Adam Kalsey.