Enable SpamAssassin Antispam rule in zimbra
Check that these are set to true, and if not, set them to true and restart amavisd and the MTA
$ zmlocalconfig antispam_enable_rule_updates
antispam_enable_rule_updates = false
$ zmlocalconfig antispam_enable_restarts
antispam_enable_restarts = false
$ zmlocalconfig -e antispam_enable_rule_updates=true
$ zmlocalconfig -e antispam_enable_restarts=true
$ zmamavisdctl restart
$ zmmtactl restart
$ zmlocalconfig antispam_enable_rule_updates
antispam_enable_rule_updates = false
$ zmlocalconfig antispam_enable_restarts
antispam_enable_restarts = false
$ zmlocalconfig -e antispam_enable_rule_updates=true
$ zmlocalconfig -e antispam_enable_restarts=true
$ zmamavisdctl restart
$ zmmtactl restart