junk status in Evolution is not spam automatically

Using SpamAssassin with Ximian Evolution
I was using Evolution as my mail reader, and wondered why Junk wasn't training spam filtering. Yikes. I forgot to install SpamAssassin. Here's a nice step by step write up on using Ximian's Evolution as your mailreader and filtering spam.

• Linux, FreeBSD, OpenBSD, or another Unix variant.
  

  
  

• Ximian Evolution e-mail client, www.ximian.com.
  

  
  

• SpamAssassin, www.spamassassin.org.
  

  
  

• Vipul's Razor is optional, but works well in conjunction with
  SpamAssassin. Best of all, SpamAssassin accesses Razor by default
  if it is installed on the computer, so there is little extra
  configuration, razor.sourceforge.net.