[Hampshire] Spamassasin user pref not being read

I have added a url to the white list in user-prefs in the format
of "*@domain.com" but an e-mail from that domain name is still ending up in
the spam folder (I am assuming that the white-list overrides the spam
scoring?). Spammassassin is running local on my PC and not a mail server
setup.

Any suggestions?

Tim