The Problem with Server-Side Antispam

I’ve been playing around with setting up antispam on an Exchange Server 2003 installation.  I settled on GFI MailEssentials for an evaluation period, and it’s been fairly smooth.

There’s a potentially big problem: how do you let the service (running on the server) know that something is legitimately not spam?  The GFI MailEssentials method is for the user to drop the message into an Exchange Public folder, but we are using a completely disconnected architecture using POP3 and SMTP.

A different service we used to use called Alligate would send out “digests” that allowed you to reply and indicate which were legitimate e-mails.  That, or a web-based admin page that allows users to set it up themselves directly, seem to be the best theoretical options.

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2 Responses to “The Problem with Server-Side Antispam”


  1. 1 Sarah January 15, 2008 at 2:54 am

    GFI MailEssentials supports the following through Remote Commands:
    1) Add Spam or ham to the Bayesian module
    2) Add keywords either to the subject keyword checking feature or to the body keyword checking feature.
    3) Add email addresses to the blacklist feature.

    When MailEssentials detects a specially formulated outbound email sent to rcommands @ mailessentials.com (this is configurable), MailEssentials will recognize the email as containing remote commands processes the remote commands and perform the necessary action.

    More infor can be found in the GFI MailEssentials manual, available here: http://www.gfi.com/mes/me12manual.pdf.

  2. 2 Anthony Stevens January 15, 2008 at 7:09 am

    Hi Sarah!

    Thanks for this info. A follow-up question if you don’t mind: How can remote users check the spam “bucket” for possible good e-mails, i.e. “add to whitelist” functionality? I would love to block all spam on the server, but only if my users can browse it for whitelist additions, as in the digest method provided via Alligate.

    Thanks!


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