system
5
After browsing through Spam Off help files http://www.spamoff.com/help/ it may help to change the Avast server settings to localhost (127.0.0.1)
Here is a thread with some examples of the Avast4.ini settings to give you an idea.
Also, have you posted on the Spam Off forums about this.
http://www.astonsoft.com/spamoff_forum/