On the Section I of your /etc/amavis/amavisd.conf, be sure to comment this line:
@bypass_spam_checks_acl = qw( . ); This is my sources.list's additional entry (woody): deb http://people.debian.org/~aurel32/BACKPORTS stable main but backports.org and apt-get.org could give you another resources. -----BEGIN GEEK CODE BLOCK----- Version: 3.12 GAT d- s:- a- C++ UL++++ P L++ E- W+++ N o-- K- w O- M- V- PS+ PE- Y+ PGP t 5 X R tv- b DI D++ G++ e++ h---- r+++ y+++ ------END GEEK CODE BLOCK------