Third Party Tools
http://www.wahlfaelschung.de/dspam-addin: Outlook AddIn for training your DSpam installation.
It's an AddIn for Outlook (2000, XP and 2003) written in C# 2.0 with the ability to retrain your DSpam-Server.
You still need a working DSpam-Installation with the CGI, but you don't need to start your Firefox and crawl through the history anymore.
It doesn't work with Outlook Express
http://dsmon.netgs.co.uk : A windows service for training your DSpam installation
This is a windows service that runs in the background, it periodically checks either an Exchange mailbox folder or a public folder for messages to reclassify. It's great for users/companies who get all dspam users to move spam emails to a public folder. This service is also written in C# 2.0 and you still need a working DSpam-Installation with the CGI.
This tool was inspired by the excellent plugin above 
http://pagode.tuxfamily.org/doku.php?id=linux:dspam : A solution to activate individual base on the first retrain of each user
This pages describes a solution developed to avoid waste of storage and processing by keeping individual bases only for users who give feedback to DSPAM. We assume there's no need to keep individual bases for users that are happy with the marks made by the global static base or just don't want to train DSPAM. This solution may be interesting if you have a server with a lot of users and not all of them (will) actually retrain DSPAM.
This solutions uses an extra table on MySQL to keep names of users who retrained DSPAM and it was tested with Postfix, Courier Maildrop 1.7.0 from Debian Sarge.