Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 10.04) I used this how to: http://www.howtoforge.com/virtual-users-domains-postfix-courier-mysql-squirrelmail-ubuntu-10.04 I installed everything in the tutorial except squirrelmail. I'm having issues trying to get spamassassin to add emails to the blacklist. I've added a file in /root/.spamassassin/user_prefs and I've placed "blacklist_from email@example.com" in the first line. I reloaded SA and it doesn't trash emails from that user. I've also tried adding the file to the vmail directory and even under the vmail/user directory, and also in the local.cf file. Where do I place black lists for spamassassin using this configuration?