# Amavisd + SpamAssassin not working, no mail header (X-Spam-*) inserted. Amavisd has below setting in its config file `/etc/amavisd/amavisd.conf` by default: $sa_tag_level_deflt = 2.0; That means Amavisd will insert `X-Spam-Flag` and other `X-Spam-*` headers when email score >= 2.0. If you want to let Amavisd always insert these headers, you can set it to a low score, for example: $sa_tag_level_deflt = -999; Amavisd's main config file is different on different Linux/BSD distributions: * Red Hat, CentOS, OpenBSD: `/etc/amavisd/amavisd.conf` * Debian, Ubuntu: `/etc/amavis/conf.d/50-user` (and other config files under `/etc/amavs/conf.d/`) * FreeBSD: `/usr/local/etc/amavisd/amavisd.conf`