Spam Training on cPanel for Desktop Mail Clients

I've just spent the past few days trying to figure out how to provide effective spam/ham training for users of desktop mail clients, and came to some important insights I haven't seen documented anywhere in the cPanel docs. So I ended up writing a blog post with detailed notes on spam/ham training for WHM administrators:

/http://birdhouse.org/blog/2012/12/22/spam-training-on-cpanel-for-desktop-mail-clients/

In my own case, I've helped some users who were persistently having 50% spam getting through knock it down to 1-2 messages per night.

I hope someone finds it useful!